[scheduler] Implement time-based cpu throttling.

third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h

Index: third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
diff --git a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
index 17c31580f266a8a390531897b224ecd63ce9900b..192490c9a6733fdeec2df328d4c502ce78c8b6c5 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
+++ b/third_party/WebKit/Source/core/inspector/InspectorWebPerfAgent.h
@@ -35,7 +35,10 @@ public:
     void didProcessTask() override;
 
     // scheduler::TaskTimeObserver implementation
-    void ReportTaskTime(double startTime, double endTime) override;
+    void ReportTaskTime(
+        scheduler::TaskQueue* taskQueue,
+        base::TimeTicks startTime,

[Sami, 2016/09/07 15:20:43]

Unfortunately we can't use TimeTicks in Blink yet. We might want to propose
allowing them, but for now let's stick to doubles.

(We could consider splitting this into two interfaces since we don't really care
about the task queue at this level either.)

+        base::TimeTicks endTime) override;
 
 private:
     Member<InspectedFrames> m_inspectedFrames;