DevTools: Support color by Product on timeline flamechart.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChartDataProvider.js

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChartDataProvider.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChartDataProvider.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChartDataProvider.js
index 693acbeec93433e2371fbfba9618d19b22365120..516811d8c8a3e94f5968c0e284a4e4a774e6195e 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChartDataProvider.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChartDataProvider.js
@@ -535,7 +535,7 @@ Timeline.TimelineFlameChartDataProvider = class extends Common.Object {
     if (type === Timeline.TimelineFlameChartEntryType.Event) {
       var event = /** @type {!SDK.TracingModel.Event} */ (this._entryData[entryIndex]);
       if (!SDK.TracingModel.isAsyncPhase(event.phase))
-        return Timeline.TimelineUIUtils.eventColor(event);
+        return this._colorForEvent(event);
       if (event.hasCategory(TimelineModel.TimelineModel.Category.Console) ||
           event.hasCategory(TimelineModel.TimelineModel.Category.UserTiming))
         return this._consoleColorGenerator.colorForID(event.name);
@@ -965,6 +965,14 @@ Timeline.TimelineFlameChartDataProvider = class extends Common.Object {
         /** @type {!SDK.TracingModel.Event} */ (this._entryData[entryIndex]) :
         null;
   }
+
+  /**
+   * @param {function(!SDK.TracingModel.Event):string} colorForEvent
+   */
+  setEntryColorMapping(colorForEvent) {

[caseq, 2017/05/08 18:20:35]

setEventColorMapping()?

[alph, 2017/05/08 19:00:20]

Done.

+    this._colorForEvent = colorForEvent;
+    this.dispatchEventToListeners(Timeline.TimelineFlameChartDataProvider.Events.DataChanged);

[caseq, 2017/05/08 18:20:35]

Let's have higher level perform refresh instead.

[alph, 2017/05/08 19:00:20]

Done.

+  }
 };
 
 Timeline.TimelineFlameChartDataProvider.InstantEventVisibleDurationMs = 0.001;