CC: Add a scheduled action for ManageTiles

cc/scheduler/scheduler.h

Index: cc/scheduler/scheduler.h
diff --git a/cc/scheduler/scheduler.h b/cc/scheduler/scheduler.h
index 063872b0b39870c787181d05620d122c50e37235..3e7b656b8ef7800e42b5abd5b1b07930652b203b 100644
--- a/cc/scheduler/scheduler.h
+++ b/cc/scheduler/scheduler.h
@@ -42,6 +42,7 @@ class SchedulerClient {
   virtual void ScheduledActionActivatePendingTree() = 0;
   virtual void ScheduledActionBeginOutputSurfaceCreation() = 0;
   virtual void ScheduledActionAcquireLayerTexturesForMainThread() = 0;
+  virtual void ScheduledActionManageTiles() = 0;
   virtual void DidAnticipatedDrawTimeChange(base::TimeTicks time) = 0;
   virtual base::TimeDelta DrawDurationEstimate() = 0;
   virtual base::TimeDelta BeginFrameToCommitDurationEstimate() = 0;
@@ -75,6 +76,8 @@ class CC_EXPORT Scheduler {
 
   void SetNeedsRedraw();
 
+  void SetNeedsManageTiles();
+
   void SetMainThreadNeedsLayerTextures();
 
   void SetSwapUsedIncompleteTile(bool used_incomplete_tile);