Timeline addTraceProvider API

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

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
index e3671badf0a6fe1682217e033be3a42a1026c9d0..b024c6d4a2a3d350be8c0ed9b632f9beb13d9f3b 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
@@ -444,6 +444,9 @@ WebInspector.TimelineFlameChartDataProvider.prototype = {
             for (var i = 0; i < compositorThreads.length; ++i)
                 this._appendSyncEvents(compositorThreads[i].events, WebInspector.UIString("Rasterizer Thread %d", i), this._headerLevel2);
         }
+        var extensionEvents = this._model.extensionEvents();
+        this._appendSyncEvents(extensionEvents, "Extension", this._headerLevel2);
+
         this._appendGPUEvents();
 
         otherThreads.forEach(thread => this._appendThreadTimelineData(thread.name, thread.events, thread.asyncEventsByGroup));
@@ -823,6 +826,7 @@ WebInspector.TimelineFlameChartDataProvider.prototype = {
      */
     _appendEvent: function(event, level)
     {
+        //console.log(event);

[caseq, 2016/07/11 18:58:38]

drop this.

         var index = this._entryData.length;
         this._entryData.push(event);
         this._timelineData.entryLevels[index] = level;