Hook up DidReceiveInputEvent to the blink scheduler

content/renderer/scheduler/renderer_scheduler.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_
 #define CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_
 
 #include "base/atomicops.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
@@ skipping 28 matching lines @@
   virtual void WillBeginFrame(const cc::BeginFrameArgs& args) = 0;
 
   // Called to notify that a previously begun frame was committed. Must be
   // called from the main thread.
   virtual void DidCommitFrameToCompositor() = 0;
 
   // Tells the scheduler that the system received an input event. Can be called
   // on any thread.
   virtual void DidReceiveInputEvent() = 0;
 
+  // Tells the scheduler that the system is displaying an animation. E.g. a
+  // fling.
+  virtual void DidAnimate() = 0;

[rmcilroy, 2014/11/06 00:53:16]

Is this called for all animations, or only input related animations (e.g.,
fling).  If the latter, how about DidAnimateForInput() ?  Also is this called by
the compositor thread?  If so suffix with "OnCompositorThread" to match
DidReceiveInputEventOnCompositorThread().  Mention which thread it can be called
on in the comment.

[alex clarke (OOO till 29th), 2014/11/06 19:21:45]

Done.

+
   // Returns true if there is high priority work pending on the main thread
   // and the caller should yield to let the scheduler service that work.
   // Must be called from the main thread.
   virtual bool ShouldYieldForHighPriorityWork() = 0;
 
   // Shuts down the scheduler by draining any remaining pending work in the work
   // queues.
   virtual void Shutdown() = 0;
 
  protected:
   RendererScheduler();
   DISALLOW_COPY_AND_ASSIGN(RendererScheduler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_