DevTools: Support grouping by Product in performance tree views.

third_party/WebKit/Source/devtools/front_end/main/Main.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 91 matching lines @@
     Runtime.experiments.register('emptySourceMapAutoStepping', 'Empty sourcemap auto-stepping');
     Runtime.experiments.register('inputEventsOnTimelineOverview', 'Input events on Timeline overview', true);
     Runtime.experiments.register('liveSASS', 'Live SASS');
     Runtime.experiments.register('networkGroupingRequests', 'Network request groups support', true);
     Runtime.experiments.register('objectPreviews', 'Object previews', true);
     Runtime.experiments.register('persistence2', 'Persistence 2.0');
     Runtime.experiments.register('sourceDiff', 'Source diff');
     Runtime.experiments.register('terminalInDrawer', 'Terminal in drawer', true);
 
     // Timeline
-    Runtime.experiments.register('timelineColorByProduct', 'Timeline: color by product', true);
+    Runtime.experiments.register('timelineColorByProduct', 'Timeline: group and color by product', true);
     Runtime.experiments.register('timelineEventInitiators', 'Timeline: event initiators');
     Runtime.experiments.register('timelineFlowEvents', 'Timeline: flow events', true);
     Runtime.experiments.register('timelineInvalidationTracking', 'Timeline: invalidation tracking', true);
     Runtime.experiments.register('timelineMultipleMainViews', 'Timeline: multiple main views');
     Runtime.experiments.register('timelinePaintTimingMarkers', 'Timeline: paint timing markers', true);
     Runtime.experiments.register('timelinePerFrameTrack', 'Timeline: per-frame tracks', true);
     Runtime.experiments.register('timelineShowAllEvents', 'Timeline: show all events', true);
     Runtime.experiments.register('timelineShowAllProcesses', 'Timeline: show all processes', true);
     Runtime.experiments.register('timelineTracingJSProfile', 'Timeline: tracing based JS profiler', true);
     Runtime.experiments.register('timelineV8RuntimeCallStats', 'Timeline: V8 Runtime Call Stats on Timeline', true);
 
     Runtime.experiments.cleanUpStaleExperiments();
 
     if (Host.isUnderTest(prefs)) {
       var testPath = JSON.parse(prefs['testPath'] || '""');
       // Enable experiments for testing.
       if (testPath.indexOf('accessibility/') !== -1)
         Runtime.experiments.enableForTest('accessibilityInspection');
       if (testPath.indexOf('audits2/') !== -1)
         Runtime.experiments.enableForTest('audits2');
       if (testPath.indexOf('coverage/') !== -1)
         Runtime.experiments.enableForTest('cssTrackerPanel');
       if (testPath.indexOf('changes/') !== -1)
         Runtime.experiments.enableForTest('changesDrawer');
       if (testPath.indexOf('sass/') !== -1)
         Runtime.experiments.enableForTest('liveSASS');
+      if (testPath.indexOf('tracing/') !== -1)
+        Runtime.experiments.enableForTest('timelineColorByProduct');

[caseq, 2017/05/09 01:48:32]

Let's rather do this in tests, use experiment.enableForTest() from an
initialize_Foo() function.

[alph, 2017/05/09 02:00:14]

Done.

     }
 
     Runtime.experiments.setDefaultExperiments(['continueToLocationMarkers', 'autoAttachToCrossProcessSubframes']);
   }
 
   /**
    * @suppressGlobalPropertiesCheck
    */
   _createAppUI() {
     console.time('Main._createAppUI');
@@ skipping 800 matching lines @@
    * @override
    * @return {?Element}
    */
   settingElement() {
     return UI.SettingsUI.createSettingCheckbox(
         Common.UIString('Show rulers'), Common.moduleSetting('showMetricsRulers'));
   }
 };
 
 new Main.Main();