[cc] Rename all cc/ filenames to Chromium style

cc/CCFrameRateCounter.h

 // 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.
 
-#ifndef CCFrameRateCounter_h
-#define CCFrameRateCounter_h
-
-#if USE(ACCELERATED_COMPOSITING)
-
-#include "base/basictypes.h"
-#include <wtf/PassOwnPtr.h>
-
-namespace cc {
-
-// This class maintains a history of timestamps, and provides functionality to
-// intelligently compute average frames per second (and standard deviation).
-class CCFrameRateCounter {
-public:
-    static PassOwnPtr<CCFrameRateCounter> create()
-    {
-        return adoptPtr(new CCFrameRateCounter());
-    }
-
-    void markBeginningOfFrame(double timestamp);
-    void markEndOfFrame();
-    int currentFrameNumber() const { return m_currentFrameNumber; }
-    void getAverageFPSAndStandardDeviation(double& averageFPS, double& standardDeviation) const;
-    int timeStampHistorySize() const { return kTimeStampHistorySize; }
-
-    // n = 0 returns the oldest frame retained in the history,
-    // while n = timeStampHistorySize() - 1 returns the timestamp most recent frame.
-    double timeStampOfRecentFrame(int /* n */);
-
-    // This is a heuristic that can be used to ignore frames in a reasonable way. Returns
-    // true if the given frame interval is too fast or too slow, based on constant thresholds.
-    bool isBadFrameInterval(double intervalBetweenConsecutiveFrames) const;
-
-    int droppedFrameCount() const { return m_droppedFrameCount; }
-
-private:
-    CCFrameRateCounter();
-
-    double frameInterval(int frameNumber) const;
-    int frameIndex(int frameNumber) const;
-    bool isBadFrame(int frameNumber) const;
-
-    // Two thresholds (measured in seconds) that describe what is considered to be a "no-op frame" that should not be counted.
-    // - if the frame is too fast, then given our compositor implementation, the frame probably was a no-op and did not draw.
-    // - if the frame is too slow, then there is probably not animating content, so we should not pollute the average.
-    static const double kFrameTooFast;
-    static const double kFrameTooSlow;
-
-    // If a frame takes longer than this threshold (measured in seconds) then we
-    // (naively) assume that it missed a screen refresh; that is, we dropped a frame.
-    // FIXME: Determine this threshold based on monitor refresh rate, crbug.com/138642.
-    static const double kDroppedFrameTime;
-
-    static const int kTimeStampHistorySize = 120;
-
-    int m_currentFrameNumber;
-    double m_timeStampHistory[kTimeStampHistorySize];
-
-    int m_droppedFrameCount;
-
-    DISALLOW_COPY_AND_ASSIGN(CCFrameRateCounter);
-};
-
-} // namespace cc
-
-#endif // USE(ACCELERATED_COMPOSITING)
-
-#endif
+// Temporary forwarding header
+#include "cc/frame_rate_counter.h"