cc: Improve frame/commit accounting

cc/frame_rate_controller.cc

 // 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.
 
 #include "config.h"
 
 #include "CCFrameRateController.h"
 
 #include "CCDelayBasedTimeSource.h"
 #include "CCTimeSource.h"
@@ skipping 112 matching lines @@
         m_manualTicker->startOneShot(0);
 }
 
 void CCFrameRateController::onTimerFired()
 {
     onTimerTick();
 }
 
 void CCFrameRateController::didBeginFrame()
 {
+    ASSERT(m_active);
+
     if (m_swapBuffersCompleteSupported)
         m_numFramesPending++;
     else if (!m_isTimeSourceThrottling)
         postManualTick();
 }
 
 void CCFrameRateController::didFinishFrame()
 {
     ASSERT(m_swapBuffersCompleteSupported);
 
     m_numFramesPending--;
     if (!m_isTimeSourceThrottling)
         postManualTick();
 }
 
 void CCFrameRateController::didAbortAllPendingFrames()
 {
     m_numFramesPending = 0;
 }
 
 base::TimeTicks CCFrameRateController::nextTickTime()
 {
     if (m_isTimeSourceThrottling)
         return m_timeSource->nextTickTime();
 
     return base::TimeTicks();
 }
 
 }