51 files declare their use of Json in Zircon Profile 8

ActiveLinkResponseFilter.php in core/lib/Drupal/Core/EventSubscriber/ActiveLinkResponseFilter.php

Contains \Drupal\Core\EventSubscriber\ActiveLinkResponseFilter.

ActiveLinkResponseFilterTest.php in core/tests/Drupal/Tests/Core/EventSubscriber/ActiveLinkResponseFilterTest.php

Contains \Drupal\Tests\Core\EventSubscriber\ActiveLinkResponseFilterTest.

AssertContentTrait.php in core/modules/simpletest/src/AssertContentTrait.php

Contains \Drupal\simpletest\AssertContentTrait.

AttachedAssetsTest.php in core/modules/system/src/Tests/Common/AttachedAssetsTest.php

Contains \Drupal\system\Tests\Common\AttachedAssetsTest.

BasicTest.php in core/modules/views/src/Tests/Wizard/BasicTest.php

Contains \Drupal\views\Tests\Wizard\BasicTest.

BlockLibraryController.php in core/modules/block/src/Controller/BlockLibraryController.php

Contains \Drupal\block\Controller\BlockLibraryController.

BlockListBuilder.php in core/modules/block/src/BlockListBuilder.php

Contains \Drupal\block\BlockListBuilder.

CKEditorAdminTest.php in core/modules/ckeditor/src/Tests/CKEditorAdminTest.php

Contains \Drupal\ckeditor\Tests\CKEditorAdminTest.

CKEditorToolbarButtonTest.php in core/modules/ckeditor/src/Tests/CKEditorToolbarButtonTest.php

Contains \Drupal\ckeditor\Tests\CKEditorToolbarButtonTest.

CommentNewIndicatorTest.php in core/modules/comment/src/Tests/CommentNewIndicatorTest.php

Contains \Drupal\comment\Tests\CommentNewIndicatorTest.

CommentRestExportTest.php in core/modules/comment/src/Tests/Views/CommentRestExportTest.php

Contains \Drupal\comment\Tests\Views\CommentRestExportTest.

common.inc in core/includes/common.inc

Common functions that many Drupal modules will need to reference.

ConfigTranslationUiTest.php in core/modules/config_translation/src/Tests/ConfigTranslationUiTest.php

Contains \Drupal\config_translation\Tests\ConfigTranslationUiTest.

ContentTranslationContextualLinksTest.php in core/modules/content_translation/src/Tests/ContentTranslationContextualLinksTest.php

Contains \Drupal\content_translation\Tests\ContentTranslationContextualLinksTest.

contextual.module in core/modules/contextual/contextual.module

Adds contextual links to perform actions related to elements on a page.

ContextualDynamicContextTest.php in core/modules/contextual/src/Tests/ContextualDynamicContextTest.php

Contains \Drupal\contextual\Tests\ContextualDynamicContextTest.

ContextualLinks.php in core/modules/contextual/src/Plugin/views/field/ContextualLinks.php

Contains \Drupal\contextual\Plugin\views\field\ContextualLinks.

CreateTest.php in core/modules/rest/src/Tests/CreateTest.php

Contains \Drupal\rest\Tests\CreateTest.

DbLogResourceTest.php in core/modules/dblog/src/Tests/Rest/DbLogResourceTest.php

Contains \Drupal\dblog\Tests\Rest\DbLogResourceTest.

DisplayBlockTest.php in core/modules/block/src/Tests/Views/DisplayBlockTest.php

Contains \Drupal\block\Tests\Views\DisplayBlockTest.

DisplayTest.php in core/modules/views_ui/src/Tests/DisplayTest.php

Contains \Drupal\views_ui\Tests\DisplayTest.

EditorSecurityTest.php in core/modules/editor/src/Tests/EditorSecurityTest.php

Contains \Drupal\editor\Tests\EditorSecurityTest.

ElementsVerticalTabsTest.php in core/modules/system/src/Tests/Form/ElementsVerticalTabsTest.php

Contains \Drupal\system\Tests\Form\ElementsVerticalTabsTest.

EmailTest.php in core/modules/system/src/Tests/Form/EmailTest.php

Contains \Drupal\system\Tests\Form\EmailTest.

EntityAutocompleteTest.php in core/modules/system/src/Tests/Entity/EntityAutocompleteTest.php

Contains \Drupal\system\Tests\Entity\EntityAutocompleteTest.

FormTest.php in core/modules/system/src/Tests/Form/FormTest.php

Contains \Drupal\system\Tests\Form\FormTest.

FormTestFormStateValuesCleanForm.php in core/modules/system/tests/modules/form_test/src/Form/FormTestFormStateValuesCleanForm.php

Contains \Drupal\form_test\Form\FormTestFormStateValuesCleanForm.

FunctionsTest.php in core/modules/system/src/Tests/Theme/FunctionsTest.php

Contains \Drupal\system\Tests\Theme\FunctionsTest.

HistoryTest.php in core/modules/history/src/Tests/HistoryTest.php

Contains \Drupal\history\Tests\HistoryTest.

JsCollectionRenderer.php in core/lib/Drupal/Core/Asset/JsCollectionRenderer.php

Contains \Drupal\Core\Asset\JsCollectionRenderer.

JsonTest.php in core/tests/Drupal/Tests/Component/Serialization/JsonTest.php

Contains \Drupal\Tests\Component\Serialization\JsonTest.

LanguageSelectElementTest.php in core/modules/system/src/Tests/Form/LanguageSelectElementTest.php

Contains \Drupal\system\Tests\Form\LanguageSelectElementTest.

LinkGenerator.php in core/lib/Drupal/Core/Utility/LinkGenerator.php

Contains \Drupal\Core\Utility\LinkGenerator.

locale.module in core/modules/locale/locale.module

Enables the translation of the user interface to languages other than English.

MenuTest.php in core/modules/menu_ui/src/Tests/MenuTest.php

Contains \Drupal\menu_ui\Tests\MenuTest.

NodeContextualLinksTest.php in core/modules/node/src/Tests/Views/NodeContextualLinksTest.php

Contains \Drupal\node\Tests\Views\NodeContextualLinksTest.

PreviewTest.php in core/modules/views_ui/src/Tests/PreviewTest.php

Contains \Drupal\views_ui\Tests\PreviewTest.

QuickEditAutocompleteTermTest.php in core/modules/quickedit/src/Tests/QuickEditAutocompleteTermTest.php

Contains \Drupal\quickedit\Tests\QuickEditAutocompleteTermTest.

QuickEditIntegrationLoadingTest.php in core/modules/editor/src/Tests/QuickEditIntegrationLoadingTest.php

Contains \Drupal\editor\Tests\QuickEditIntegrationLoadingTest.

QuickEditIntegrationTest.php in core/modules/editor/src/Tests/QuickEditIntegrationTest.php

Contains \Drupal\editor\Tests\QuickEditIntegrationTest.

QuickEditLoadingTest.php in core/modules/quickedit/src/Tests/QuickEditLoadingTest.php

Contains \Drupal\quickedit\Tests\QuickEditLoadingTest.

ReadTest.php in core/modules/rest/src/Tests/ReadTest.php

Contains \Drupal\rest\Tests\ReadTest.

RenderWebTest.php in core/modules/system/src/Tests/Common/RenderWebTest.php

Contains \Drupal\system\Tests\Common\RenderWebTest.

ResponseTest.php in core/modules/system/src/Tests/Form/ResponseTest.php

Contains \Drupal\system\Tests\Form\ResponseTest.

StateValuesCleanTest.php in core/modules/system/src/Tests/Form/StateValuesCleanTest.php

Contains \Drupal\system\Tests\Form\StateValuesCleanTest.

theme.inc in core/includes/theme.inc

The theme system, which controls the output of Drupal.

ThemeTest.php in core/modules/system/src/Tests/Theme/ThemeTest.php

Contains \Drupal\system\Tests\Theme\ThemeTest.

UpdateTest.php in core/modules/rest/src/Tests/UpdateTest.php

Contains \Drupal\rest\Tests\UpdateTest.

UrlTest.php in core/modules/system/src/Tests/Form/UrlTest.php

Contains \Drupal\system\Tests\Form\UrlTest.

ViewAjaxTest.php in core/modules/views/src/Tests/ViewAjaxTest.php

Contains \Drupal\views\Tests\ViewAjaxTest.

WebTestBase.php in core/modules/simpletest/src/WebTestBase.php

Contains \Drupal\simpletest\WebTestBase.