Cleanup experiment

Author: sbuggay

front_end/core/host/UserMetrics.ts

@@ -985,11 +985,10 @@ export enum DevtoolsExperiments {
   'timeline-alternative-navigation' = 104,
   // 106 was historically used [https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6230097]
   // next experiment should be 107
-  'timeline-frames' = 108,
   /* eslint-enable @typescript-eslint/naming-convention */
 
   // Increment this when new experiments are added.
-  MAX_VALUE = 108,
+  MAX_VALUE = 106,
 }
 
 // Update DevToolsIssuesPanelIssueExpanded from tools/metrics/histograms/enums.xml if new enum is added.

front_end/core/rn_experiments/experimentsImpl.ts

@@ -198,3 +198,10 @@ Instance.register({
   unstable: true,
   enabledByDefault: () => false,
 });
+
+Instance.register({
+  name: RNExperimentName.ENABLE_TIMELINE_FRAMES,
+  title: 'Enable performance frames track',
+  unstable: true,
+  enabledByDefault: () => globalThis.enableTimelineFrames ?? false,
+});

front_end/core/root/Runtime.ts

@@ -307,6 +307,7 @@ export enum RNExperimentName {
   JS_HEAP_PROFILER_ENABLE = 'js-heap-profiler-enable',
   ENABLE_PERFORMANCE_PANEL = 'enable-performance-panel',
   ENABLE_NETWORK_PANEL = 'enable-network-panel',
+  ENABLE_TIMELINE_FRAMES = 'enable-timeline-frames',
 }
 
 export enum ConditionName {
@@ -332,7 +333,6 @@ export const enum ExperimentName {
   TIMELINE_DEBUG_MODE = 'timeline-debug-mode',
   TIMELINE_ENHANCED_TRACES = 'timeline-enhanced-traces',
   TIMELINE_COMPILED_SOURCES = 'timeline-compiled-sources',
-  TIMELINE_FRAMES = 'timeline-frames',
   TIMELINE_EXPERIMENTAL_INSIGHTS = 'timeline-experimental-insights',
   TIMELINE_DIM_UNRELATED_EVENTS = 'timeline-dim-unrelated-events',
   TIMELINE_ALTERNATIVE_NAVIGATION = 'timeline-alternative-navigation',
@@ -344,6 +344,7 @@ export const enum ExperimentName {
   NOT_REACT_NATIVE_SPECIFIC_UI = '!' + RNExperimentName.REACT_NATIVE_SPECIFIC_UI,
   ENABLE_PERFORMANCE_PANEL = RNExperimentName.ENABLE_PERFORMANCE_PANEL,
   ENABLE_NETWORK_PANEL = RNExperimentName.ENABLE_NETWORK_PANEL,
+  ENABLE_TIMELINE_FRAMES = RNExperimentName.ENABLE_TIMELINE_FRAMES,
 }
 
 export enum GenAiEnterprisePolicyValue {

front_end/entrypoints/main/MainImpl.ts

@@ -301,10 +301,8 @@ export class MainImpl {
     Root.Runtime.experiments.register(
         Root.Runtime.ExperimentName.TIMELINE_DEBUG_MODE,
         'Performance panel: Enable debug mode (trace event details, etc)', true);
-    Root.Runtime.experiments.register(
-        Root.Runtime.ExperimentName.TIMELINE_FRAMES, 'Performance panel: Enable frames track', true);
 
-    // Debugging
+        // Debugging
     Root.Runtime.experiments.register('instrumentation-breakpoints', 'Enable instrumentation breakpoints', true);
     Root.Runtime.experiments.register('use-source-map-scopes', 'Use scope information from source maps', true);
 

front_end/global_typings/react_native.d.ts

@@ -16,6 +16,8 @@ declare global {
     // eslint-disable-next-line no-var
     var enableDisplayingFullDisconnectedReason: boolean|undefined;
     // eslint-disable-next-line no-var
+    var enableTimelineFrames: boolean|undefined;
+    // eslint-disable-next-line no-var
     var reactNativeOpenInEditorButtonImage: string|undefined;
     // eslint-disable-next-line no-var,@typescript-eslint/naming-convention
     var FB_ONLY__reactNativeFeedbackLink: string|undefined;

front_end/ui/visual_logging/KnownContextValues.ts

@@ -3495,7 +3495,6 @@ export const knownContextValues = new Set([
   'time',
   'timeline',
   'timeline-alternative-navigation',
-  'timeline-frames',
   'timeline-capture-layers-and-pictures',
   'timeline-capture-selector-stats',
   'timeline-compiled-sources',