Remove highlight_current_diff_row feature flag

app/assets/javascripts/diffs/components/diff_file_row.vue

@@ -41,10 +41,6 @@ export default {
       return !this.hideFileStats && this.file.type === 'blob';
     },
     fileClasses() {
-      if (!this.glFeatures.highlightCurrentDiffRow) {
-        return '';
-      }
-
       return this.file.type === 'blob' && !this.viewedFiles[this.file.fileHash]
         ? 'gl-font-weight-bold'
         : '';

app/controllers/projects/merge_requests_controller.rb

@@ -36,7 +36,6 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
     push_frontend_feature_flag(:hide_jump_to_next_unresolved_in_threads, default_enabled: true)
     push_frontend_feature_flag(:merge_request_widget_graphql, @project)
     push_frontend_feature_flag(:unified_diff_components, @project)
-    push_frontend_feature_flag(:highlight_current_diff_row, @project)
     push_frontend_feature_flag(:default_merge_ref_for_diffs, @project)
     push_frontend_feature_flag(:core_security_mr_widget, @project, default_enabled: true)
     push_frontend_feature_flag(:core_security_mr_widget_counts, @project)

changelogs/unreleased/268282-remove-feature-flag.yml

+---
+title: Enable file tree highlighting by default
+merge_request: 49356
+author:
+type: changed

config/feature_flags/development/highlight_current_diff_row.yml

----
-name: highlight_current_diff_row
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/27937
-rollout_issue_url: 
-milestone: '13.4'
-type: development
-group: group::source code
-default_enabled: false

spec/frontend/diffs/components/diff_file_row_spec.js

@@ -7,12 +7,9 @@ import ChangedFileIcon from '~/vue_shared/components/changed_file_icon.vue';
 describe('Diff File Row component', () => {
   let wrapper;
 
-  const createComponent = (props = {}, highlightCurrentDiffRow = false) => {
+  const createComponent = (props = {}) => {
     wrapper = shallowMount(DiffFileRow, {
       propsData: { ...props },
-      provide: {
-        glFeatures: { highlightCurrentDiffRow },
-      },
     });
   };
 
@@ -60,26 +57,23 @@ describe('Diff File Row component', () => {
   });
 
   it.each`
-    features                             | fileType  | isViewed | expected
-    ${{ highlightCurrentDiffRow: true }} | ${'blob'} | ${false} | ${'gl-font-weight-bold'}
-    ${{}}                                | ${'blob'} | ${true}  | ${''}
-    ${{}}                                | ${'tree'} | ${false} | ${''}
-    ${{}}                                | ${'tree'} | ${true}  | ${''}
+    fileType  | isViewed | expected
+    ${'blob'} | ${false} | ${'gl-font-weight-bold'}
+    ${'blob'} | ${true}  | ${''}
+    ${'tree'} | ${false} | ${''}
+    ${'tree'} | ${true}  | ${''}
   `(
-    'with (features="$features", fileType="$fileType", isViewed=$isViewed), sets fileClasses="$expected"',
-    ({ features, fileType, isViewed, expected }) => {
-      createComponent(
-        {
-          file: {
-            type: fileType,
-            fileHash: '#123456789',
-          },
-          level: 0,
-          hideFileStats: false,
-          viewedFiles: isViewed ? { '#123456789': true } : {},
+    'with (fileType="$fileType", isViewed=$isViewed), sets fileClasses="$expected"',
+    ({ fileType, isViewed, expected }) => {
+      createComponent({
+        file: {
+          type: fileType,
+          fileHash: '#123456789',
         },
-        features.highlightCurrentDiffRow,
-      );
+        level: 0,
+        hideFileStats: false,
+        viewedFiles: isViewed ? { '#123456789': true } : {},
+      });
       expect(wrapper.find(FileRow).props('fileClasses')).toBe(expected);
     },
   );