Create a new action triggered when a BeginMainFrame is not expected before vsync

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index 9efd831d76aad31df9c7b6e41d5484cd8eb7265b..a58d3549bcb9e9b40cb21860a948e13d0ab0301a 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -48,6 +48,7 @@ class SchedulerClient {
   virtual void ScheduledActionPerformImplSideInvalidation() = 0;
   virtual void DidFinishImplFrame() = 0;
   virtual void SendBeginMainFrameNotExpectedSoon() = 0;
+  virtual void ScheduledActionDoShortIdleWork(const BeginFrameArgs& args) = 0;

[Sami, 2017/03/24 15:24:10]

I think my entry to the great bikeshedding race of 2017 is still
ScheduledActionBeginMainFrameNotExpectedUntil(const base::TimeTicks&). The
reason is that the cc scheduler doesn't really know or care about what the main
thread does with this notification -- it doesn't necessarily need to be idle
work.

[Dan Elphick, 2017/03/29 16:02:44]

Done.

 
  protected:
   virtual ~SchedulerClient() {}
@@ -189,6 +190,7 @@ class CC_EXPORT Scheduler : public BeginFrameObserverBase {
   void ScheduleBeginImplFrameDeadline();
   void ScheduleBeginImplFrameDeadlineIfNeeded();
   void BeginImplFrameNotExpectedSoon();
+  void ScheduleShortIdleWork(const BeginFrameArgs& args);
   void SetupNextBeginFrameIfNeeded();
   void DrawIfPossible();
   void DrawForced();