diff --git a/core/modules/block/src/Tests/BlockRenderOrderTest.php b/core/modules/block/src/Tests/BlockRenderOrderTest.php
index 11da1919e8e1..45bcf540b685 100644
--- a/core/modules/block/src/Tests/BlockRenderOrderTest.php
+++ b/core/modules/block/src/Tests/BlockRenderOrderTest.php
@@ -68,7 +68,7 @@ class BlockRenderOrderTest extends WebTestBase {
     }
 
     $this->drupalGet('');
-    $test_content = $this->drupalGetContent('');
+    $test_content = $this->getRawContent('');
 
     $controller = $this->container->get('entity.manager')->getStorage('block');
     foreach ($controller->loadMultiple() as $return_block) {
diff --git a/core/modules/comment/src/Tests/CommentBlockTest.php b/core/modules/comment/src/Tests/CommentBlockTest.php
index d93a220aa39b..a7bcc945b13c 100644
--- a/core/modules/comment/src/Tests/CommentBlockTest.php
+++ b/core/modules/comment/src/Tests/CommentBlockTest.php
@@ -74,10 +74,10 @@ class CommentBlockTest extends CommentTestBase {
       $this->assertText($comments[$i]->getSubject(), String::format('Comment @number found in block.', array('@number' => 10 - $i)));
       if ($i > 1) {
         $previous_position = $position;
-        $position = strpos($this->drupalGetContent(), $comments[$i]->getSubject());
+        $position = strpos($this->getRawContent(), $comments[$i]->getSubject());
         $this->assertTrue($position > $previous_position, String::format('Comment @a appears after comment @b', array('@a' => 10 - $i, '@b' => 11 - $i)));
       }
-      $position = strpos($this->drupalGetContent(), $comments[$i]->getSubject());
+      $position = strpos($this->getRawContent(), $comments[$i]->getSubject());
     }
 
     // Test that links to comments work when comments are across pages.
diff --git a/core/modules/comment/src/Tests/CommentNonNodeTest.php b/core/modules/comment/src/Tests/CommentNonNodeTest.php
index 97dd9ccb6c8b..b4fabee2e55e 100644
--- a/core/modules/comment/src/Tests/CommentNonNodeTest.php
+++ b/core/modules/comment/src/Tests/CommentNonNodeTest.php
@@ -186,7 +186,7 @@ class CommentNonNodeTest extends WebTestBase {
       $regex .= $comment->comment_body->value . '(.*?)';
       $regex .= '/s';
 
-      return (boolean) preg_match($regex, $this->drupalGetContent());
+      return (boolean) preg_match($regex, $this->getRawContent());
     }
     else {
       return FALSE;
@@ -200,7 +200,7 @@ class CommentNonNodeTest extends WebTestBase {
    *   Contact info is available.
    */
   function commentContactInfoAvailable() {
-    return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->drupalGetContent());
+    return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->getRawContent());
   }
 
   /**
@@ -239,7 +239,7 @@ class CommentNonNodeTest extends WebTestBase {
    */
   function getUnapprovedComment($subject) {
     $this->drupalGet('admin/content/comment/approval');
-    preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->drupalGetContent(), $match);
+    preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->getRawContent(), $match);
 
     return $match[2];
   }
diff --git a/core/modules/comment/src/Tests/CommentTestBase.php b/core/modules/comment/src/Tests/CommentTestBase.php
index 7b1f7e00e776..dbb6d560967d 100644
--- a/core/modules/comment/src/Tests/CommentTestBase.php
+++ b/core/modules/comment/src/Tests/CommentTestBase.php
@@ -193,7 +193,7 @@ abstract class CommentTestBase extends WebTestBase {
       $regex .= ($reply ? '</article>\s</div>(.*?)' : '');
       $regex .= '!s';
 
-      return (boolean) preg_match($regex, $this->drupalGetContent());
+      return (boolean) preg_match($regex, $this->getRawContent());
     }
     else {
       return FALSE;
@@ -326,7 +326,7 @@ abstract class CommentTestBase extends WebTestBase {
    *   Contact info is available.
    */
   function commentContactInfoAvailable() {
-    return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->drupalGetContent());
+    return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->getRawContent());
   }
 
   /**
@@ -365,7 +365,7 @@ abstract class CommentTestBase extends WebTestBase {
    */
   function getUnapprovedComment($subject) {
     $this->drupalGet('admin/content/comment/approval');
-    preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->drupalGetContent(), $match);
+    preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->getRawContent(), $match);
 
     return $match[2];
   }
diff --git a/core/modules/config/src/Tests/ConfigExportImportUITest.php b/core/modules/config/src/Tests/ConfigExportImportUITest.php
index f3aa1ff1ab68..5f8e5ba86b86 100644
--- a/core/modules/config/src/Tests/ConfigExportImportUITest.php
+++ b/core/modules/config/src/Tests/ConfigExportImportUITest.php
@@ -127,7 +127,7 @@ class ConfigExportImportUITest extends WebTestBase {
 
     // Export the configuration.
     $this->drupalPostForm('admin/config/development/configuration/full/export', array(), 'Export');
-    $this->tarball = $this->drupalGetContent();
+    $this->tarball = $this->getRawContent();
 
     $this->config('system.site')
       ->set('slogan', $this->originalSlogan)
@@ -184,7 +184,7 @@ class ConfigExportImportUITest extends WebTestBase {
 
     // Export the configuration.
     $this->drupalPostForm('admin/config/development/configuration/full/export', array(), 'Export');
-    $this->tarball = $this->drupalGetContent();
+    $this->tarball = $this->getRawContent();
     $filename = file_directory_temp() .'/' . $this->randomMachineName();
     file_put_contents($filename, $this->tarball);
 
diff --git a/core/modules/config/src/Tests/ConfigExportUITest.php b/core/modules/config/src/Tests/ConfigExportUITest.php
index fe3ae8d24840..1a679de644d2 100644
--- a/core/modules/config/src/Tests/ConfigExportUITest.php
+++ b/core/modules/config/src/Tests/ConfigExportUITest.php
@@ -47,7 +47,7 @@ class ConfigExportUITest extends WebTestBase {
     $this->assertResponse(200, 'User can access the download callback.');
 
     // Get the archived binary file provided to user for download.
-    $archive_data = $this->drupalGetContent();
+    $archive_data = $this->getRawContent();
 
     // Temporarily save the archive file.
     $uri = file_unmanaged_save_data($archive_data, 'temporary://config.tar.gz');
diff --git a/core/modules/content_translation/src/Tests/ContentTranslationContextualLinksTest.php b/core/modules/content_translation/src/Tests/ContentTranslationContextualLinksTest.php
index 0dd98bf60d55..196fa258a202 100644
--- a/core/modules/content_translation/src/Tests/ContentTranslationContextualLinksTest.php
+++ b/core/modules/content_translation/src/Tests/ContentTranslationContextualLinksTest.php
@@ -131,7 +131,7 @@ class ContentTranslationContextualLinksTest extends WebTestBase {
     $response = $this->renderContextualLinks(array('node:node=1:'), 'node/' . $node->id());
     $this->assertResponse(200);
     $json = Json::decode($response);
-    $this->drupalSetContent($json['node:node=1:']);
+    $this->setRawContent($json['node:node=1:']);
     $this->assertLinkByHref($translate_link, 0, 'The contextual link to translate the node is shown.');
 
     // Check that the link leads to the translate page.
diff --git a/core/modules/datetime/src/Tests/DateTimeFieldTest.php b/core/modules/datetime/src/Tests/DateTimeFieldTest.php
index 1f3a409d89d9..e2223dc016c7 100644
--- a/core/modules/datetime/src/Tests/DateTimeFieldTest.php
+++ b/core/modules/datetime/src/Tests/DateTimeFieldTest.php
@@ -491,7 +491,7 @@ class DateTimeFieldTest extends WebTestBase {
     $display = EntityViewDisplay::collectRenderDisplay($entity, $view_mode);
     $build = $display->build($entity);
     $output = drupal_render($build);
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     $this->verbose($output);
   }
 
diff --git a/core/modules/editor/src/Tests/EditorAdminTest.php b/core/modules/editor/src/Tests/EditorAdminTest.php
index b151896bf1de..7ffa1222c2fb 100644
--- a/core/modules/editor/src/Tests/EditorAdminTest.php
+++ b/core/modules/editor/src/Tests/EditorAdminTest.php
@@ -54,9 +54,9 @@ class EditorAdminTest extends WebTestBase {
     $this->drupalGet('admin/config/content/formats/manage/filtered_html');
 
     // Ensure the form field order is correct.
-    $roles_pos = strpos($this->drupalGetContent(), 'Roles');
-    $editor_pos = strpos($this->drupalGetContent(), 'Text editor');
-    $filters_pos = strpos($this->drupalGetContent(), 'Enabled filters');
+    $roles_pos = strpos($this->getRawContent(), 'Roles');
+    $editor_pos = strpos($this->getRawContent(), 'Text editor');
+    $filters_pos = strpos($this->getRawContent(), 'Enabled filters');
     $this->assertTrue($roles_pos < $editor_pos && $editor_pos < $filters_pos, '"Text Editor" select appears in the correct location of the text format configuration UI.');
 
     // Verify the <select>.
diff --git a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
index beeac25f68ee..50477f55a87d 100644
--- a/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
+++ b/core/modules/field/src/Tests/Boolean/BooleanFieldTest.php
@@ -115,7 +115,7 @@ class BooleanFieldTest extends WebTestBase {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertRaw('<div class="field-item">' . $on . '</div>');
 
     // Test the display_label option.
diff --git a/core/modules/field/src/Tests/Email/EmailFieldTest.php b/core/modules/field/src/Tests/Email/EmailFieldTest.php
index 2ce3c46fcde3..55adf48875c8 100644
--- a/core/modules/field/src/Tests/Email/EmailFieldTest.php
+++ b/core/modules/field/src/Tests/Email/EmailFieldTest.php
@@ -103,7 +103,7 @@ class EmailFieldTest extends WebTestBase {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertLinkByHref('mailto:test@example.com');
   }
 
diff --git a/core/modules/field/src/Tests/String/StringFieldTest.php b/core/modules/field/src/Tests/String/StringFieldTest.php
index fd5699eea191..a097ec57c559 100644
--- a/core/modules/field/src/Tests/String/StringFieldTest.php
+++ b/core/modules/field/src/Tests/String/StringFieldTest.php
@@ -97,7 +97,7 @@ class StringFieldTest extends WebTestBase {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertText($value, 'Filtered tags are not displayed');
   }
 }
diff --git a/core/modules/field_ui/src/Tests/ManageDisplayTest.php b/core/modules/field_ui/src/Tests/ManageDisplayTest.php
index fa48d854ef47..1adf1aec968f 100644
--- a/core/modules/field_ui/src/Tests/ManageDisplayTest.php
+++ b/core/modules/field_ui/src/Tests/ManageDisplayTest.php
@@ -447,7 +447,7 @@ class ManageDisplayTest extends WebTestBase {
     \Drupal::entityManager()->clearCachedFieldDefinitions();
 
     // Save current content so that we can restore it when we're done.
-    $old_content = $this->drupalGetContent();
+    $old_content = $this->getRawContent();
 
     // Render a cloned node, so that we do not alter the original.
     $clone = clone $node;
@@ -456,12 +456,12 @@ class ManageDisplayTest extends WebTestBase {
     $this->verbose(t('Rendered node - view mode: @view_mode', array('@view_mode' => $view_mode)) . '<hr />'. $output);
 
     // Assign content so that WebTestBase functions can be used.
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     $method = ($not_exists ? 'assertNoText' : 'assertText');
     $return = $this->{$method}((string) $text, $message);
 
     // Restore previous content.
-    $this->drupalSetContent($old_content);
+    $this->setRawContent($old_content);
 
     return $return;
   }
diff --git a/core/modules/file/src/Tests/FileListingTest.php b/core/modules/file/src/Tests/FileListingTest.php
index 25b170e432eb..38293ec242d9 100644
--- a/core/modules/file/src/Tests/FileListingTest.php
+++ b/core/modules/file/src/Tests/FileListingTest.php
@@ -101,7 +101,7 @@ class FileListingTest extends FileFieldTestBase {
       $this->assertLinkByHref(file_create_url($file->getFileUri()));
       $this->assertLinkByHref('admin/content/files/usage/' . $file->id());
     }
-    $this->assertFalse(preg_match('/views-field-status priority-low\">\s*' . t('Temporary') . '/', $this->drupalGetContent()), 'All files are stored as permanent.');
+    $this->assertFalse(preg_match('/views-field-status priority-low\">\s*' . t('Temporary') . '/', $this->getRawContent()), 'All files are stored as permanent.');
 
     // Use one file two times and check usage information.
     $orphaned_file = $nodes[1]->file->target_id;
diff --git a/core/modules/history/src/Tests/Views/HistoryTimestampTest.php b/core/modules/history/src/Tests/Views/HistoryTimestampTest.php
index f711d33af230..ed9a3bd25e95 100644
--- a/core/modules/history/src/Tests/Views/HistoryTimestampTest.php
+++ b/core/modules/history/src/Tests/Views/HistoryTimestampTest.php
@@ -70,7 +70,7 @@ class HistoryTimestampTest extends ViewTestBase {
     $this->executeView($view);
     $this->assertEqual(count($view->result), 2);
     $output = $view->preview();
-    $this->drupalSetContent(drupal_render($output));
+    $this->setRawContent(drupal_render($output));
     $result = $this->xpath('//span[@class=:class]', array(':class' => 'marker'));
     $this->assertEqual(count($result), 1, 'Just one node is marked as new');
 
diff --git a/core/modules/image/src/Tests/ImageThemeFunctionTest.php b/core/modules/image/src/Tests/ImageThemeFunctionTest.php
index ad7af4dffc40..a67c2eb10328 100644
--- a/core/modules/image/src/Tests/ImageThemeFunctionTest.php
+++ b/core/modules/image/src/Tests/ImageThemeFunctionTest.php
@@ -92,7 +92,7 @@ class ImageThemeFunctionTest extends WebTestBase {
 
     // Test using theme_image_formatter() with a NULL value for the alt option.
     $element = $base_element;
-    $this->drupalSetContent(drupal_render($element));
+    $this->setRawContent(drupal_render($element));
     $elements = $this->xpath('//a[@href=:path]/img[@class="image-style-test" and @src=:url and @width=:width and @height=:height]', array(':path' => base_path() . $path, ':url' => $url, ':width' => $image->getWidth(), ':height' => $image->getHeight()));
     $this->assertEqual(count($elements), 1, 'theme_image_formatter() correctly renders with a NULL value for the alt option.');
 
@@ -100,7 +100,7 @@ class ImageThemeFunctionTest extends WebTestBase {
     // link options.
     $element = $base_element;
     $element['#item']->alt = '';
-    $this->drupalSetContent(drupal_render($element));
+    $this->setRawContent(drupal_render($element));
     $elements = $this->xpath('//a[@href=:path]/img[@class="image-style-test" and @src=:url and @width=:width and @height=:height and @alt=""]', array(':path' => base_path() . $path, ':url' => $url, ':width' => $image->getWidth(), ':height' => $image->getHeight()));
     $this->assertEqual(count($elements), 1, 'theme_image_formatter() correctly renders without title, alt, or path options.');
 
@@ -108,7 +108,7 @@ class ImageThemeFunctionTest extends WebTestBase {
     $fragment = $this->randomMachineName();
     $element = $base_element;
     $element['#url'] = Url::fromRoute('<none>', [], ['fragment' => $fragment]);
-    $this->drupalSetContent(drupal_render($element));
+    $this->setRawContent(drupal_render($element));
     $elements = $this->xpath('//a[@href=:fragment]/img[@class="image-style-test" and @src=:url and @width=:width and @height=:height and @alt=""]', array(
       ':fragment' => '#' . $fragment,
       ':url' => $url,
@@ -140,14 +140,14 @@ class ImageThemeFunctionTest extends WebTestBase {
     );
 
     $element = $base_element;
-    $this->drupalSetContent(drupal_render($element));
+    $this->setRawContent(drupal_render($element));
     $elements = $this->xpath('//img[@class="image-style-image-test" and @src=:url and @alt=""]', array(':url' => $url));
     $this->assertEqual(count($elements), 1, 'theme_image_style() renders an image correctly.');
 
     // Test using theme_image_style() with a NULL value for the alt option.
     $element = $base_element;
     $element['#alt'] = NULL;
-    $this->drupalSetContent(drupal_render($element));
+    $this->setRawContent(drupal_render($element));
     $elements = $this->xpath('//img[@class="image-style-image-test" and @src=:url]', array(':url' => $url));
     $this->assertEqual(count($elements), 1, 'theme_image_style() renders an image correctly with a NULL value for the alt option.');
   }
@@ -167,7 +167,7 @@ class ImageThemeFunctionTest extends WebTestBase {
       '#attributes' => array('class' => 'image-with-regular-alt', 'id' => 'my-img'),
     );
 
-    $this->drupalSetContent(drupal_render($image_with_alt_property));
+    $this->setRawContent(drupal_render($image_with_alt_property));
     $elements = $this->xpath('//img[contains(@class, class) and contains(@alt, :alt)]', array(":class" => "image-with-regular-alt", ":alt" => "Regular alt"));
     $this->assertEqual(count($elements), 1, 'Regular alt displays correctly');
 
@@ -185,7 +185,7 @@ class ImageThemeFunctionTest extends WebTestBase {
       ),
     );
 
-    $this->drupalSetContent(drupal_render($image_with_alt_attribute_alt_attribute));
+    $this->setRawContent(drupal_render($image_with_alt_attribute_alt_attribute));
     $elements = $this->xpath('//img[contains(@class, class) and contains(@alt, :alt)]', array(":class" => "image-with-attribute-alt", ":alt" => "Attribute alt"));
     $this->assertEqual(count($elements), 1, 'Attribute alt displays correctly');
 
@@ -204,7 +204,7 @@ class ImageThemeFunctionTest extends WebTestBase {
       ),
     );
 
-    $this->drupalSetContent(drupal_render($image_with_alt_attribute_both));
+    $this->setRawContent(drupal_render($image_with_alt_attribute_both));
     $elements = $this->xpath('//img[contains(@class, class) and contains(@alt, :alt)]', array(":class" => "image-with-attribute-alt", ":alt" => "Attribute alt"));
     $this->assertEqual(count($elements), 1, 'Attribute alt overrides alt property if both set.');
   }
diff --git a/core/modules/link/src/Tests/LinkFieldTest.php b/core/modules/link/src/Tests/LinkFieldTest.php
index 42ee4a3fd837..4f676fbeefaa 100644
--- a/core/modules/link/src/Tests/LinkFieldTest.php
+++ b/core/modules/link/src/Tests/LinkFieldTest.php
@@ -583,7 +583,7 @@ class LinkFieldTest extends WebTestBase {
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), $view_mode);
     $content = $display->build($entity);
     $output = drupal_render($content);
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     $this->verbose($output);
   }
 
diff --git a/core/modules/node/src/Tests/SummaryLengthTest.php b/core/modules/node/src/Tests/SummaryLengthTest.php
index 7ac73c464c61..0c34eb01cf15 100644
--- a/core/modules/node/src/Tests/SummaryLengthTest.php
+++ b/core/modules/node/src/Tests/SummaryLengthTest.php
@@ -30,7 +30,7 @@ class SummaryLengthTest extends NodeTestBase {
     // Render the node as a teaser.
     $content = $this->drupalBuildEntityView($node, 'teaser');
     $this->assertTrue(strlen($content['body'][0]['#markup']) < 600, 'Teaser is less than 600 characters long.');
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     // The string 'What is a Drupalism?' is between the 200th and 600th
     // characters of the node body, so it should be included if the summary is
     // 600 characters long.
@@ -48,7 +48,7 @@ class SummaryLengthTest extends NodeTestBase {
     // 200 characters in length and so does not include 'What is a Drupalism?'.
     $content = $this->drupalBuildEntityView($node, 'teaser');
     $this->assertTrue(strlen($content['body'][0]['#markup']) < 200, 'Teaser is less than 200 characters long.');
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertText($node->label());
     $this->assertNoRaw($expected);
   }
diff --git a/core/modules/node/src/Tests/Views/NodeContextualLinksTest.php b/core/modules/node/src/Tests/Views/NodeContextualLinksTest.php
index a2a8371ec4f6..ddc21c37e009 100644
--- a/core/modules/node/src/Tests/Views/NodeContextualLinksTest.php
+++ b/core/modules/node/src/Tests/Views/NodeContextualLinksTest.php
@@ -45,7 +45,7 @@ class NodeContextualLinksTest extends NodeTestBase {
     $response = $this->renderContextualLinks(array('node:node=1:'), 'node');
     $this->assertResponse(200);
     $json = Json::decode($response);
-    $this->drupalSetContent($json['node:node=1:']);
+    $this->setRawContent($json['node:node=1:']);
 
     // @todo Add these back when the functionality for making Views displays
     //   appear in contextual links is working again.
diff --git a/core/modules/quickedit/src/Tests/QuickEditAutocompleteTermTest.php b/core/modules/quickedit/src/Tests/QuickEditAutocompleteTermTest.php
index f88dd646fdc9..473cc083461d 100644
--- a/core/modules/quickedit/src/Tests/QuickEditAutocompleteTermTest.php
+++ b/core/modules/quickedit/src/Tests/QuickEditAutocompleteTermTest.php
@@ -164,7 +164,7 @@ class QuickEditAutocompleteTermTest extends WebTestBase {
       $response = $this->drupalPost($quickedit_uri, 'application/vnd.drupal-ajax', $post);
       $this->assertResponse(200);
       $ajax_commands = Json::decode($response);
-      $this->drupalSetContent($ajax_commands[0]['data']);
+      $this->setRawContent($ajax_commands[0]['data']);
       $this->assertLink($this->term1->getName());
       $this->assertLink($this->term2->getName());
       $this->assertText('new term');
@@ -180,7 +180,7 @@ class QuickEditAutocompleteTermTest extends WebTestBase {
       // the form to edit the taxonomy term field, it should contain all three
       // taxonomy terms, including the one that has just been newly created and
       // which is not yet stored.
-      $this->drupalSetContent($ajax_commands[0]['data']);
+      $this->setRawContent($ajax_commands[0]['data']);
       $this->assertFieldByName($this->fieldName, implode(', ', array($this->term1->getName(), 'new term', $this->term2->label())));
 
       // Save the entity.
diff --git a/core/modules/simpletest/src/Tests/BrowserTest.php b/core/modules/simpletest/src/Tests/BrowserTest.php
index cceb865cbbbb..e0ac326cc8bb 100644
--- a/core/modules/simpletest/src/Tests/BrowserTest.php
+++ b/core/modules/simpletest/src/Tests/BrowserTest.php
@@ -50,7 +50,7 @@ class BrowserTest extends WebTestBase {
 </body>
 </html>
 EOF;
-    $this->drupalSetContent($testpage);
+    $this->setRawContent($testpage);
 
     // Matches the first link.
     $urls = $this->xpath('//a[text()=:text]', array(':text' => 'A "weird" link, just to bother the dumb "XPath 1.0"'));
diff --git a/core/modules/system/src/Tests/Ajax/DialogTest.php b/core/modules/system/src/Tests/Ajax/DialogTest.php
index 3b77798a2436..37bf06c011c7 100644
--- a/core/modules/system/src/Tests/Ajax/DialogTest.php
+++ b/core/modules/system/src/Tests/Ajax/DialogTest.php
@@ -173,7 +173,7 @@ class DialogTest extends AjaxTestBase {
       ],
     ];
     $this->assertEqual($expected_ajax_settings, $ajax_result[0]['settings']['ajax']);
-    $this->drupalSetContent($ajax_result[3]['data']);
+    $this->setRawContent($ajax_result[3]['data']);
     // Remove the data, the form build id and token will never match.
     unset($ajax_result[3]['data']);
     $form = $this->xpath("//form[@id='ajax-test-form']");
@@ -189,7 +189,7 @@ class DialogTest extends AjaxTestBase {
 
     // Emulate going to the JS version of the form and check the JSON response.
     $ajax_result = $this->drupalGetAJAX('admin/structure/contact/add', array(), array('Accept: application/vnd.drupal-modal'));
-    $this->drupalSetContent($ajax_result[3]['data']);
+    $this->setRawContent($ajax_result[3]['data']);
     // Remove the data, the form build id and token will never match.
     unset($ajax_result[3]['data']);
     $form = $this->xpath("//form[@id='contact-form-add-form']");
diff --git a/core/modules/system/src/Tests/Bootstrap/PageCacheTest.php b/core/modules/system/src/Tests/Bootstrap/PageCacheTest.php
index c3538f2cc8bf..0f7bc6d2b5a5 100644
--- a/core/modules/system/src/Tests/Bootstrap/PageCacheTest.php
+++ b/core/modules/system/src/Tests/Bootstrap/PageCacheTest.php
@@ -234,14 +234,14 @@ class PageCacheTest extends WebTestBase {
     // Fill the cache and verify that output is compressed.
     $this->drupalGet('', array(), array('Accept-Encoding: gzip,deflate'));
     $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'MISS', 'Page was not cached.');
-    $this->drupalSetContent(gzinflate(substr($this->drupalGetContent(), 10, -8)));
+    $this->setRawContent(gzinflate(substr($this->getRawContent(), 10, -8)));
     $this->assertRaw('</html>', 'Page was gzip compressed.');
 
     // Verify that cached output is compressed.
     $this->drupalGet('', array(), array('Accept-Encoding: gzip,deflate'));
     $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
     $this->assertEqual($this->drupalGetHeader('Content-Encoding'), 'gzip', 'A Content-Encoding header was sent.');
-    $this->drupalSetContent(gzinflate(substr($this->drupalGetContent(), 10, -8)));
+    $this->setRawContent(gzinflate(substr($this->getRawContent(), 10, -8)));
     $this->assertRaw('</html>', 'Page was gzip compressed.');
 
     // Verify that a client without compression support gets an uncompressed page.
@@ -257,7 +257,7 @@ class PageCacheTest extends WebTestBase {
 
     // Verify if cached page is still available for a client with compression support.
     $this->drupalGet('', array(), array('Accept-Encoding: gzip,deflate'));
-    $this->drupalSetContent(gzinflate(substr($this->drupalGetContent(), 10, -8)));
+    $this->setRawContent(gzinflate(substr($this->getRawContent(), 10, -8)));
     $this->assertRaw('</html>', 'Page was delivered after compression mode is changed (compression support enabled).');
 
     // Verify if cached page is still available for a client without compression support.
diff --git a/core/modules/system/src/Tests/Common/AddFeedTest.php b/core/modules/system/src/Tests/Common/AddFeedTest.php
index 75a20d01f06a..5da8ffb43408 100644
--- a/core/modules/system/src/Tests/Common/AddFeedTest.php
+++ b/core/modules/system/src/Tests/Common/AddFeedTest.php
@@ -63,7 +63,7 @@ class AddFeedTest extends WebTestBase {
 
     drupal_process_attached($build);
 
-    $this->drupalSetContent(drupal_get_html_head());
+    $this->setRawContent(drupal_get_html_head());
     foreach ($urls as $description => $feed_info) {
       $this->assertPattern($this->urlToRSSLinkPattern($feed_info['url'], $feed_info['title']), format_string('Found correct feed header for %description', array('%description' => $description)));
     }
diff --git a/core/modules/system/src/Tests/Common/RenderWebTest.php b/core/modules/system/src/Tests/Common/RenderWebTest.php
index c2cb88f042c2..4bdb9960eebb 100644
--- a/core/modules/system/src/Tests/Common/RenderWebTest.php
+++ b/core/modules/system/src/Tests/Common/RenderWebTest.php
@@ -149,8 +149,8 @@ class RenderWebTest extends WebTestBase {
    */
   protected function assertRenderedElement(array $element, $xpath, array $xpath_args = array()) {
     $original_element = $element;
-    $this->drupalSetContent(drupal_render_root($element));
-    $this->verbose('<hr />' . $this->drupalGetContent());
+    $this->setRawContent(drupal_render_root($element));
+    $this->verbose('<hr />' . $this->getRawContent());
 
     // @see \Drupal\simpletest\WebTestBase::xpath()
     $xpath = $this->buildXPathQuery($xpath, $xpath_args);
diff --git a/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php b/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php
index 6c358f076b28..5a3455c4a882 100644
--- a/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php
+++ b/core/modules/system/src/Tests/Database/SelectPagerDefaultTest.php
@@ -39,7 +39,7 @@ class SelectPagerDefaultTest extends DatabaseWebTestBase {
 
     for ($page = 0; $page <= $num_pages; ++$page) {
       $this->drupalGet('database_test/pager_query_even/' . $limit, array('query' => array('page' => $page)));
-      $data = json_decode($this->drupalGetContent());
+      $data = json_decode($this->getRawContent());
 
       if ($page == $num_pages) {
         $correct_number = $count - ($limit * $page);
@@ -73,7 +73,7 @@ class SelectPagerDefaultTest extends DatabaseWebTestBase {
 
     for ($page = 0; $page <= $num_pages; ++$page) {
       $this->drupalGet('database_test/pager_query_odd/' . $limit, array('query' => array('page' => $page)));
-      $data = json_decode($this->drupalGetContent());
+      $data = json_decode($this->getRawContent());
 
       if ($page == $num_pages) {
         $correct_number = $count - ($limit * $page);
diff --git a/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php b/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php
index 2102667cf59f..4456701dd3f8 100644
--- a/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php
+++ b/core/modules/system/src/Tests/Database/SelectTableSortDefaultTest.php
@@ -32,7 +32,7 @@ class SelectTableSortDefaultTest extends DatabaseWebTestBase {
 
     foreach ($sorts as $sort) {
       $this->drupalGet('database_test/tablesort/', array('query' => array('order' => $sort['field'], 'sort' => $sort['sort'])));
-      $data = json_decode($this->drupalGetContent());
+      $data = json_decode($this->getRawContent());
 
       $first = array_shift($data->tasks);
       $last = array_pop($data->tasks);
@@ -60,7 +60,7 @@ class SelectTableSortDefaultTest extends DatabaseWebTestBase {
 
     foreach ($sorts as $sort) {
       $this->drupalGet('database_test/tablesort_first/', array('query' => array('order' => $sort['field'], 'sort' => $sort['sort'])));
-      $data = json_decode($this->drupalGetContent());
+      $data = json_decode($this->getRawContent());
 
       $first = array_shift($data->tasks);
       $last = array_pop($data->tasks);
diff --git a/core/modules/system/src/Tests/Database/TemporaryQueryTest.php b/core/modules/system/src/Tests/Database/TemporaryQueryTest.php
index a3ac73100ce3..5c95f6b7140b 100644
--- a/core/modules/system/src/Tests/Database/TemporaryQueryTest.php
+++ b/core/modules/system/src/Tests/Database/TemporaryQueryTest.php
@@ -33,7 +33,7 @@ class TemporaryQueryTest extends DatabaseWebTestBase {
    */
   function testTemporaryQuery() {
     $this->drupalGet('database_test/db_query_temporary');
-    $data = json_decode($this->drupalGetContent());
+    $data = json_decode($this->getRawContent());
     if ($data) {
       $this->assertEqual($this->countTableRows('test'), $data->row_count, 'The temporary table contains the correct amount of rows.');
       $this->assertFalse(db_table_exists($data->table_name), 'The temporary table is, indeed, temporary.');
diff --git a/core/modules/system/src/Tests/Form/FormTest.php b/core/modules/system/src/Tests/Form/FormTest.php
index 22b3b84a7721..e82002b02c80 100644
--- a/core/modules/system/src/Tests/Form/FormTest.php
+++ b/core/modules/system/src/Tests/Form/FormTest.php
@@ -338,7 +338,7 @@ class FormTest extends WebTestBase {
       'multiple_no_default_required[]' => 'three',
     );
     $this->drupalPostForm(NULL, $edit, 'Submit');
-    $values = Json::decode($this->drupalGetContent());
+    $values = Json::decode($this->getRawContent());
 
     // Verify expected values.
     $expected = array(
diff --git a/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php b/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php
index a0588015c372..410d320f14ec 100644
--- a/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php
+++ b/core/modules/system/src/Tests/Form/LanguageSelectElementTest.php
@@ -88,7 +88,7 @@ class LanguageSelectElementTest extends WebTestBase {
     // field elements.
     $edit = array();
     $this->drupalPostForm(NULL, $edit, t('Submit'));
-    $values = Json::decode($this->drupalGetContent());
+    $values = Json::decode($this->getRawContent());
     $this->assertEqual($values['languages_all'], 'xx');
     $this->assertEqual($values['languages_configurable'], 'en');
     $this->assertEqual($values['languages_locked'], LanguageInterface::LANGCODE_NOT_SPECIFIED);
diff --git a/core/modules/system/src/Tests/Session/SessionTest.php b/core/modules/system/src/Tests/Session/SessionTest.php
index b22ac6473010..0921f662c395 100644
--- a/core/modules/system/src/Tests/Session/SessionTest.php
+++ b/core/modules/system/src/Tests/Session/SessionTest.php
@@ -54,7 +54,7 @@ class SessionTest extends WebTestBase {
     $user->save();
     $this->drupalGet('session-test/id');
     $matches = array();
-    preg_match('/\s*session_id:(.*)\n/', $this->drupalGetContent(), $matches);
+    preg_match('/\s*session_id:(.*)\n/', $this->getRawContent(), $matches);
     $this->assertTrue(!empty($matches[1]) , 'Found session ID before logging in.');
     $original_session = $matches[1];
 
@@ -71,7 +71,7 @@ class SessionTest extends WebTestBase {
 
     $this->drupalGet('session-test/id');
     $matches = array();
-    preg_match('/\s*session_id:(.*)\n/', $this->drupalGetContent(), $matches);
+    preg_match('/\s*session_id:(.*)\n/', $this->getRawContent(), $matches);
     $this->assertTrue(!empty($matches[1]) , 'Found session ID after logging in.');
     $this->assertTrue($matches[1] != $original_session, 'Session ID changed after login.');
   }
diff --git a/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php b/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php
index b0d72655a61e..fd86ccaefdcc 100644
--- a/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php
+++ b/core/modules/system/src/Tests/System/ShutdownFunctionsTest.php
@@ -42,7 +42,7 @@ class ShutdownFunctionsTest extends WebTestBase {
     // If using PHP-FPM then fastcgi_finish_request() will have been fired
     // returning the response before shutdown functions have fired.
     // @see \Drupal\system_test\Controller\SystemTestController::shutdownFunctions()
-    $server_using_fastcgi = strpos($this->drupalGetContent(), 'The function fastcgi_finish_request exists when serving the request.');
+    $server_using_fastcgi = strpos($this->getRawContent(), 'The function fastcgi_finish_request exists when serving the request.');
     if ($server_using_fastcgi) {
       // We need to wait to ensure that the shutdown functions have fired.
       sleep(1);
diff --git a/core/modules/system/src/Tests/Theme/EngineTwigTest.php b/core/modules/system/src/Tests/Theme/EngineTwigTest.php
index d564a8fda540..c154b4378d92 100644
--- a/core/modules/system/src/Tests/Theme/EngineTwigTest.php
+++ b/core/modules/system/src/Tests/Theme/EngineTwigTest.php
@@ -57,7 +57,7 @@ class EngineTwigTest extends WebTestBase {
       'url (as route) absolute with fragment: ' . $url_generator->generateFromRoute('user.register', array(), array('absolute' => TRUE, 'fragment' => 'bottom')),
     );
     // Make sure we got something.
-    $content = $this->drupalGetContent();
+    $content = $this->getRawContent();
     $this->assertFalse(empty($content), 'Page content is not empty');
     foreach ($expected as $string) {
       $this->assertRaw('<div>' . $string . '</div>');
diff --git a/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php b/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php
index bd5f6e996134..1db3583942ca 100644
--- a/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php
+++ b/core/modules/system/src/Tests/Theme/ThemeSuggestionsAlterTest.php
@@ -112,7 +112,7 @@ class ThemeSuggestionsAlterTest extends WebTestBase {
     $this->resetAll();
     $this->drupalGet('theme-test/specific-suggestion-alter');
     $this->assertText('Template overridden based on suggestion alter hook determined by the base hook.');
-    $this->assertTrue(strpos($this->drupalGetContent(), 'theme_test_specific_suggestions__variant') < strpos($this->drupalGetContent(), 'theme_test_specific_suggestions__variant__foo'), 'Specific theme call is added to the suggestions array before the suggestions alter hook.');
+    $this->assertTrue(strpos($this->getRawContent(), 'theme_test_specific_suggestions__variant') < strpos($this->getRawContent(), 'theme_test_specific_suggestions__variant__foo'), 'Specific theme call is added to the suggestions array before the suggestions alter hook.');
   }
 
   /**
diff --git a/core/modules/system/src/Tests/Theme/TwigFilterTest.php b/core/modules/system/src/Tests/Theme/TwigFilterTest.php
index 5665a4c029b5..04ffa40f5bd5 100644
--- a/core/modules/system/src/Tests/Theme/TwigFilterTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigFilterTest.php
@@ -42,7 +42,7 @@ class TwigFilterTest extends WebTestBase {
       ),
     );
     $rendered = drupal_render($filter_test);
-    $this->drupalSetContent($rendered);
+    $this->setRawContent($rendered);
 
     $elements = array(
       array(
diff --git a/core/modules/system/src/Tests/Theme/TwigNamespaceTest.php b/core/modules/system/src/Tests/Theme/TwigNamespaceTest.php
index 2b759e4e05e4..2b6f3c571eab 100644
--- a/core/modules/system/src/Tests/Theme/TwigNamespaceTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigNamespaceTest.php
@@ -58,7 +58,7 @@ class TwigNamespaceTest extends WebTestBase {
   public function testTwigNamespaces() {
     // Test twig @extends and @include in template files.
     $test = array('#theme' => 'twig_namespace_test');
-    $this->drupalSetContent(drupal_render($test));
+    $this->setRawContent(drupal_render($test));
 
     $this->assertText('This line is from twig_namespace_a/templates/test.html.twig');
     $this->assertText('This line is from twig_namespace_b/templates/test.html.twig');
diff --git a/core/modules/system/src/Tests/Theme/TwigRawTest.php b/core/modules/system/src/Tests/Theme/TwigRawTest.php
index 5c2741995580..1fa535342f0a 100644
--- a/core/modules/system/src/Tests/Theme/TwigRawTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigRawTest.php
@@ -33,7 +33,7 @@ class TwigRawTest extends WebTestBase {
       '#script' => '<script>alert("This alert is real because I will put it through the raw filter!");</script>',
     );
     $rendered = drupal_render($test);
-    $this->drupalSetContent($rendered);
+    $this->setRawContent($rendered);
     $this->assertRaw('<script>alert("This alert is real because I will put it through the raw filter!");</script>');
   }
 
diff --git a/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php b/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php
index f0ebf5e618fd..a83d43e08ebf 100644
--- a/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php
+++ b/core/modules/taxonomy/src/Tests/TermFieldMultipleVocabularyTest.php
@@ -115,7 +115,7 @@ class TermFieldMultipleVocabularyTest extends TaxonomyTestBase {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertText($term1->getName(), 'Term 1 name is displayed.');
     $this->assertText($term2->getName(), 'Term 2 name is displayed.');
 
@@ -126,7 +126,7 @@ class TermFieldMultipleVocabularyTest extends TaxonomyTestBase {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
 
     // Term 1 should still be displayed; term 2 should not be.
     $this->assertText($term1->getName(), 'Term 1 name is displayed.');
diff --git a/core/modules/taxonomy/src/Tests/TermFieldTest.php b/core/modules/taxonomy/src/Tests/TermFieldTest.php
index d41a0832aba9..c9e9dbc003ec 100644
--- a/core/modules/taxonomy/src/Tests/TermFieldTest.php
+++ b/core/modules/taxonomy/src/Tests/TermFieldTest.php
@@ -132,7 +132,7 @@ class TermFieldTest extends TaxonomyTestBase {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertText($term->getName(), 'Term label is displayed.');
 
     // Delete the vocabulary and verify that the widget is gone.
diff --git a/core/modules/text/src/Tests/TextFieldTest.php b/core/modules/text/src/Tests/TextFieldTest.php
index 104051a4be58..494d3383729c 100644
--- a/core/modules/text/src/Tests/TextFieldTest.php
+++ b/core/modules/text/src/Tests/TextFieldTest.php
@@ -139,7 +139,7 @@ class TextFieldTest extends StringFieldTest {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertNoRaw($value, 'HTML tags are not displayed.');
     $this->assertEscaped($value, 'Escaped HTML is displayed correctly.');
 
@@ -178,7 +178,7 @@ class TextFieldTest extends StringFieldTest {
     $entity = entity_load('entity_test', $id);
     $display = entity_get_display($entity->getEntityTypeId(), $entity->bundle(), 'full');
     $content = $display->build($entity);
-    $this->drupalSetContent(drupal_render($content));
+    $this->setRawContent(drupal_render($content));
     $this->assertRaw($value, 'Value is displayed unfiltered');
   }
 
diff --git a/core/modules/update/src/Tests/UpdateContribTest.php b/core/modules/update/src/Tests/UpdateContribTest.php
index a75bb32940e9..77f7b9beda08 100644
--- a/core/modules/update/src/Tests/UpdateContribTest.php
+++ b/core/modules/update/src/Tests/UpdateContribTest.php
@@ -159,7 +159,7 @@ class UpdateContribTest extends UpdateTestBase {
     // we're really testing that the project listings are in the right order.
     $bbb_project_link = '<div class="project"><a href="http://example.com/project/bbb_update_test">BBB Update test</a>';
     $ccc_project_link = '<div class="project"><a href="http://example.com/project/ccc_update_test">CCC Update test</a>';
-    $this->assertTrue(strpos($this->drupalGetContent(), $bbb_project_link) < strpos($this->drupalGetContent(), $ccc_project_link), "'BBB Update test' project is listed before the 'CCC Update test' project");
+    $this->assertTrue(strpos($this->getRawContent(), $bbb_project_link) < strpos($this->getRawContent(), $ccc_project_link), "'BBB Update test' project is listed before the 'CCC Update test' project");
   }
 
   /**
diff --git a/core/modules/user/src/Tests/UserBlocksTest.php b/core/modules/user/src/Tests/UserBlocksTest.php
index 62bd46ce14c9..13492643e8e8 100644
--- a/core/modules/user/src/Tests/UserBlocksTest.php
+++ b/core/modules/user/src/Tests/UserBlocksTest.php
@@ -94,12 +94,12 @@ class UserBlocksTest extends WebTestBase {
     // Test block output.
     \Drupal::currentUser()->setAccount($user1);
     $content = entity_view($block, 'block');
-    $this->drupalSetContent(render($content));
+    $this->setRawContent(render($content));
     $this->assertRaw(t('2 users'), 'Correct number of online users (2 users).');
     $this->assertText($user1->getUsername(), 'Active user 1 found in online list.');
     $this->assertText($user2->getUsername(), 'Active user 2 found in online list.');
     $this->assertNoText($user3->getUsername(), 'Inactive user not found in online list.');
-    $this->assertTrue(strpos($this->drupalGetContent(), $user1->getUsername()) > strpos($this->drupalGetContent(), $user2->getUsername()), 'Online users are ordered correctly.');
+    $this->assertTrue(strpos($this->getRawContent(), $user1->getUsername()) > strpos($this->getRawContent(), $user2->getUsername()), 'Online users are ordered correctly.');
   }
 
   /**
diff --git a/core/modules/views/src/Tests/Plugin/DisplayTest.php b/core/modules/views/src/Tests/Plugin/DisplayTest.php
index 8b628ec24c02..f5053b9b0acf 100644
--- a/core/modules/views/src/Tests/Plugin/DisplayTest.php
+++ b/core/modules/views/src/Tests/Plugin/DisplayTest.php
@@ -176,7 +176,7 @@ class DisplayTest extends PluginTestBase {
     $output = $view->preview();
     $output = drupal_render($output);
 
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     $result = $this->xpath('//a[@class=:class]', array(':class' => 'more-link'));
     $this->assertEqual($result[0]->attributes()->href, \Drupal::url('view.test_display_more.page_1'), 'The right more link is shown.');
     $this->assertEqual(trim($result[0][0]), $expected_more_text, 'The right link text is shown.');
@@ -185,7 +185,7 @@ class DisplayTest extends PluginTestBase {
     // tested.
     $more_link = $view->display_handler->renderMoreLink();
     $more_link = drupal_render($more_link);
-    $this->drupalSetContent($more_link);
+    $this->setRawContent($more_link);
     $result = $this->xpath('//a[@class=:class]', array(':class' => 'more-link'));
     $this->assertEqual($result[0]->attributes()->href, \Drupal::url('view.test_display_more.page_1'), 'The right more link is shown.');
     $this->assertEqual(trim($result[0][0]), $expected_more_text, 'The right link text is shown.');
@@ -201,7 +201,7 @@ class DisplayTest extends PluginTestBase {
     $this->executeView($view);
     $output = $view->preview();
     $output = drupal_render($output);
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     $result = $this->xpath('//a[@class=:class]', array(':class' => 'more-link'));
     $this->assertTrue(empty($result), 'The more link is not shown.');
 
@@ -219,7 +219,7 @@ class DisplayTest extends PluginTestBase {
     $this->executeView($view);
     $output = $view->preview();
     $output = drupal_render($output);
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     $result = $this->xpath('//a[@class=:class]', array(':class' => 'more-link'));
     $this->assertTrue(empty($result), 'The more link is not shown when view has more records.');
 
diff --git a/core/modules/views/src/Tests/Plugin/ExposedFormTest.php b/core/modules/views/src/Tests/Plugin/ExposedFormTest.php
index 4829529a7af5..9f5f01aa2b64 100644
--- a/core/modules/views/src/Tests/Plugin/ExposedFormTest.php
+++ b/core/modules/views/src/Tests/Plugin/ExposedFormTest.php
@@ -132,7 +132,7 @@ class ExposedFormTest extends ViewTestBase {
     $this->executeView($view);
     $exposed_form = $view->display_handler->getPlugin('exposed_form');
     $output = $exposed_form->renderExposedForm();
-    $this->drupalSetContent(drupal_render($output));
+    $this->setRawContent(drupal_render($output));
 
     $this->assertFieldByXpath('//form/@id', $this->getExpectedExposedFormId($view), 'Expected form ID found.');
 
diff --git a/core/modules/views/src/Tests/Plugin/StyleGridTest.php b/core/modules/views/src/Tests/Plugin/StyleGridTest.php
index dc72064a30e9..1f4e9b41a9a9 100644
--- a/core/modules/views/src/Tests/Plugin/StyleGridTest.php
+++ b/core/modules/views/src/Tests/Plugin/StyleGridTest.php
@@ -73,7 +73,7 @@ class StyleGridTest extends PluginTestBase {
     $this->executeView($view);
     $output = $view->preview();
     $output = drupal_render($output);
-    $this->drupalSetContent($output);
+    $this->setRawContent($output);
     if (!in_array($alignment, $this->alignmentsTested)) {
       $result = $this->xpath('//div[contains(@class, "views-view-grid") and contains(@class, :alignment) and contains(@class, :columns)]', array(':alignment' => $alignment, ':columns' => 'cols-' . $columns));
       $this->assertTrue(count($result), ucfirst($alignment) . " grid markup detected.");
diff --git a/core/modules/views/src/Tests/ViewAjaxTest.php b/core/modules/views/src/Tests/ViewAjaxTest.php
index 5eb004d4b194..1121f41af3dc 100644
--- a/core/modules/views/src/Tests/ViewAjaxTest.php
+++ b/core/modules/views/src/Tests/ViewAjaxTest.php
@@ -58,7 +58,7 @@ class ViewAjaxTest extends ViewTestBase {
     $this->assertEqual($data[1]['command'], 'insert');
     $this->assertTrue(strpos($data[1]['selector'], '.view-dom-id-') === 0);
 
-    $this->drupalSetContent($data[1]['data']);
+    $this->setRawContent($data[1]['data']);
     $result = $this->xpath('//div[contains(@class, "views-row")]');
     $this->assertEqual(count($result), 2, 'Ensure that two items are renderd in the HTML.');
   }
diff --git a/core/modules/views/src/Tests/ViewElementTest.php b/core/modules/views/src/Tests/ViewElementTest.php
index 441f78ea8514..e9c8105577e5 100644
--- a/core/modules/views/src/Tests/ViewElementTest.php
+++ b/core/modules/views/src/Tests/ViewElementTest.php
@@ -57,7 +57,7 @@ class ViewElementTest extends ViewTestBase {
 
     // Set the content as our rendered array.
     $render = $this->render;
-    $this->drupalSetContent(drupal_render($render));
+    $this->setRawContent(drupal_render($render));
 
     $xpath = $this->xpath('//div[@class="views-element-container"]');
     $this->assertTrue($xpath, 'The view container has been found in the rendered output.');
@@ -102,7 +102,7 @@ class ViewElementTest extends ViewTestBase {
 
     // Test the render array again.
     $render = $this->render;
-    $this->drupalSetContent(drupal_render($render));
+    $this->setRawContent(drupal_render($render));
     // There should be 1 row in the results, 'John' arg 25.
     $xpath = $this->xpath('//div[@class="view-content"]/div');
     $this->assertEqual(count($xpath), 1);
@@ -124,7 +124,7 @@ class ViewElementTest extends ViewTestBase {
     // Set the content as our rendered array.
     $render = $this->render;
     $render['#embed'] = TRUE;
-    $this->drupalSetContent(drupal_render($render));
+    $this->setRawContent(drupal_render($render));
 
     $xpath = $this->xpath('//div[@class="views-element-container"]');
     $this->assertTrue($xpath, 'The view container has been found in the rendered output.');
@@ -170,7 +170,7 @@ class ViewElementTest extends ViewTestBase {
     // Test the render array again.
     $render = $this->render;
     $render['#embed'] = TRUE;
-    $this->drupalSetContent(drupal_render($render));
+    $this->setRawContent(drupal_render($render));
     // There should be 1 row in the results, 'John' arg 25.
     $xpath = $this->xpath('//div[@class="view-content"]/div');
     $this->assertEqual(count($xpath), 1);
diff --git a/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php b/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php
index 946b3c99af4c..a201cb1c99fc 100644
--- a/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php
+++ b/core/modules/views/src/Tests/Wizard/ItemsPerPageTest.php
@@ -56,7 +56,7 @@ class ItemsPerPageTest extends WizardTestBase {
     // appear in the expected order.
     $this->assertUrl($view['page[path]']);
     $this->assertText($view['page[title]']);
-    $content = $this->drupalGetContent();
+    $content = $this->getRawContent();
     $this->assertText($node5->label());
     $this->assertText($node4->label());
     $this->assertText($node3->label());
@@ -78,7 +78,7 @@ class ItemsPerPageTest extends WizardTestBase {
     $this->drupalPlaceBlock("views_block:{$view['id']}-block_1");
 
     $this->drupalGet('user');
-    $content = $this->drupalGetContent();
+    $content = $this->getRawContent();
     $this->assertText($node5->label());
     $this->assertText($node4->label());
     $this->assertText($node3->label());
diff --git a/core/modules/views/src/Tests/Wizard/SortingTest.php b/core/modules/views/src/Tests/Wizard/SortingTest.php
index eb6cc98284fb..31128536b5e8 100644
--- a/core/modules/views/src/Tests/Wizard/SortingTest.php
+++ b/core/modules/views/src/Tests/Wizard/SortingTest.php
@@ -41,7 +41,7 @@ class SortingTest extends WizardTestBase {
     // Make sure the view shows the nodes in the expected order.
     $this->assertUrl($view1['page[path]']);
     $this->assertText($view1['page[title]']);
-    $content = $this->drupalGetContent();
+    $content = $this->getRawContent();
     $this->assertText($node1->label());
     $this->assertText($node2->label());
     $this->assertText($node3->label());
@@ -66,7 +66,7 @@ class SortingTest extends WizardTestBase {
     // Make sure the view shows the nodes in the expected order.
     $this->assertUrl($view2['page[path]']);
     $this->assertText($view2['page[title]']);
-    $content = $this->drupalGetContent();
+    $content = $this->getRawContent();
     $this->assertText($node3->label());
     $this->assertText($node2->label());
     $this->assertText($node1->label());