cc: Improve frame/commit accounting

cc/CCDelayBasedTimeSource.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 CCDelayBasedTimeSource_h
 #define CCDelayBasedTimeSource_h
 
 #include "CCTimeSource.h"
 #include "CCTimer.h"
 #include <wtf/PassRefPtr.h>
@@ skipping 15 matching lines @@
     // CCTimeSource implementation
     virtual void setTimebaseAndInterval(base::TimeTicks timebase, base::TimeDelta interval) OVERRIDE;
 
     virtual void setActive(bool) OVERRIDE;
     virtual bool active() const OVERRIDE;
 
     // Get the last and next tick times. nextTimeTime() returns null when
     // inactive.
     virtual base::TimeTicks lastTickTime() OVERRIDE;
     virtual base::TimeTicks nextTickTime() OVERRIDE;
+    virtual base::TimeDelta interval() OVERRIDE;
 
     // CCTimerClient implementation.
     virtual void onTimerFired() OVERRIDE;
 
     // Virtual for testing.
     virtual base::TimeTicks now() const;
 
 protected:
     CCDelayBasedTimeSource(base::TimeDelta interval, CCThread*);
     base::TimeTicks nextTickTarget(base::TimeTicks now);
@@ skipping 24 matching lines @@
     Parameters m_currentParameters;
     Parameters m_nextParameters;
 
     State m_state;
     CCThread* m_thread;
     CCTimer m_timer;
 };
 
 }
 #endif // CCDelayBasedTimeSource_h