Convert CC scheduler logic to use base::TimeTicks/Delta instead of doubles

cc/CCFrameRateController.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 CCFrameRateController_h
 #define CCFrameRateController_h
 
 #include "CCTimer.h"
-
+#include "base/time.h"
 #include <wtf/Deque.h>
 #include <wtf/OwnPtr.h>
 #include <wtf/PassOwnPtr.h>
 
 namespace cc {
 
 class CCThread;
 class CCTimeSource;
 
 class CCFrameRateControllerClient {
@@ skipping 20 matching lines @@
     // Use the following methods to adjust target frame rate.
     //
     // Multiple frames can be in-progress, but for every didBeginFrame, a
     // didFinishFrame should be posted.
     //
     // If the rendering pipeline crashes, call didAbortAllPendingFrames.
     void didBeginFrame();
     void didFinishFrame();
     void didAbortAllPendingFrames();
     void setMaxFramesPending(int); // 0 for unlimited.
-    double nextTickTimeIfActivated();
+    base::TimeTicks nextTickTimeIfActivated();
 
-    void setTimebaseAndInterval(double timebase, double intervalSeconds);
+    void setTimebaseAndInterval(base::TimeTicks timebase, base::TimeDelta interval);
     void setSwapBuffersCompleteSupported(bool);
 
 protected:
     friend class CCFrameRateControllerTimeSourceAdapter;
     void onTimerTick();
 
     void postManualTick();
 
     // CCTimerClient implementation (used for unthrottled frame-rate).
     virtual void onTimerFired() OVERRIDE;
 
     CCFrameRateControllerClient* m_client;
     int m_numFramesPending;
     int m_maxFramesPending;
     RefPtr<CCTimeSource> m_timeSource;
     OwnPtr<CCFrameRateControllerTimeSourceAdapter> m_timeSourceClientAdapter;
     bool m_active;
     bool m_swapBuffersCompleteSupported;
 
     // Members for unthrottled frame-rate.
     bool m_isTimeSourceThrottling;
     OwnPtr<CCTimer> m_manualTicker;
 };
 
 }
 #endif // CCFrameRateController_h