cc: Make animations tick regardless of drawing.

cc/scheduler/scheduler.h

 // Copyright 2011 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 CC_SCHEDULER_SCHEDULER_H_
 #define CC_SCHEDULER_SCHEDULER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
@@ skipping 78 matching lines @@
 
   void SetSwapBuffersCompleteSupported(bool supported);
   void DidSwapBuffersComplete();
 
   void DidLoseOutputSurface();
   void DidRecreateOutputSurface();
 
   bool CommitPending() const { return state_machine_.CommitPending(); }
   bool RedrawPending() const { return state_machine_.RedrawPending(); }
 
+  bool WillDrawIfNeeded() const;
+
   void SetTimebaseAndInterval(base::TimeTicks timebase,
                               base::TimeDelta interval);
 
   base::TimeTicks AnticipatedDrawTime();
 
   base::TimeTicks LastVSyncTime();
 
   // FrameRateControllerClient implementation
   virtual void VSyncTick(bool throttled) OVERRIDE;
 
  private:
   Scheduler(SchedulerClient* client,
             scoped_ptr<FrameRateController> frame_rate_controller,
             const SchedulerSettings& scheduler_settings);
 
   void ProcessScheduledActions();
 
   const SchedulerSettings settings_;
   SchedulerClient* client_;
   scoped_ptr<FrameRateController> frame_rate_controller_;
   SchedulerStateMachine state_machine_;
   bool inside_process_scheduled_actions_;
 
   DISALLOW_COPY_AND_ASSIGN(Scheduler);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_SCHEDULER_H_