cc: Switch to Chromium DCHECKs and LOGs

cc/CCFrameRateCounter.cpp

 // Copyright 2012 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"
 
 #if USE(ACCELERATED_COMPOSITING)
 #include "CCFrameRateCounter.h"
 
 #include <cmath>
@@ skipping 104 matching lines @@
             // We've gone through all available historical data, so stop.
             break;
         }
     }
 
     standardDeviation = sqrt(fpsVarianceNumerator / averageFPSCount);
 }
 
 double CCFrameRateCounter::timeStampOfRecentFrame(int n)
 {
-    ASSERT(n >= 0 && n < kTimeStampHistorySize);
+    DCHECK(n >= 0);
+    DCHECK(n < kTimeStampHistorySize);
     int desiredIndex = (frameIndex(m_currentFrameNumber) + n) % kTimeStampHistorySize;
     return m_timeStampHistory[desiredIndex];
 }
 
 } // namespace cc
 
 #endif // USE(ACCELERATED_COMPOSITING)