[cc] Rename all cc/ filenames to Chromium style

cc/CCOverdrawMetrics.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 CCOverdrawMetrics_h
-#define CCOverdrawMetrics_h
-
-#include <wtf/PassOwnPtr.h>
-
-namespace WebKit {
-class WebTransformationMatrix;
-}
-
-namespace cc {
-class IntRect;
-class CCLayerTreeHost;
-class CCLayerTreeHostImpl;
-
-// FIXME: compute overdraw metrics only occasionally, not every frame.
-class CCOverdrawMetrics {
-public:
-    static PassOwnPtr<CCOverdrawMetrics> create(bool recordMetricsForFrame) { return adoptPtr(new CCOverdrawMetrics(recordMetricsForFrame)); }
-
-    // These methods are used for saving metrics during update/commit.
-
-    // Record pixels painted by WebKit into the texture updater, but does not mean the pixels were rasterized in main memory.
-    void didPaint(const IntRect& paintedRect);
-    // Records that an invalid tile was culled and did not need to be painted/uploaded, and did not contribute to other tiles needing to be painted.
-    void didCullTileForUpload();
-    // Records pixels that were uploaded to texture memory.
-    void didUpload(const WebKit::WebTransformationMatrix& transformToTarget, const IntRect& uploadRect, const IntRect& opaqueRect);
-    // Record contents texture(s) behind present using the given number of bytes.
-    void didUseContentsTextureMemoryBytes(size_t contentsTextureUseBytes);
-    // Record RenderSurface texture(s) being present using the given number of bytes.
-    void didUseRenderSurfaceTextureMemoryBytes(size_t renderSurfaceUseBytes);
-
-    // These methods are used for saving metrics during draw.
-
-    // Record pixels that were not drawn to screen.
-    void didCullForDrawing(const WebKit::WebTransformationMatrix& transformToTarget, const IntRect& beforeCullRect, const IntRect& afterCullRect);
-    // Record pixels that were drawn to screen.
-    void didDraw(const WebKit::WebTransformationMatrix& transformToTarget, const IntRect& afterCullRect, const IntRect& opaqueRect);
-
-    void recordMetrics(const CCLayerTreeHost*) const;
-    void recordMetrics(const CCLayerTreeHostImpl*) const;
-
-    // Accessors for tests.
-    float pixelsDrawnOpaque() const { return m_pixelsDrawnOpaque; }
-    float pixelsDrawnTranslucent() const { return m_pixelsDrawnTranslucent; }
-    float pixelsCulledForDrawing() const { return m_pixelsCulledForDrawing; }
-    float pixelsPainted() const { return m_pixelsPainted; }
-    float pixelsUploadedOpaque() const { return m_pixelsUploadedOpaque; }
-    float pixelsUploadedTranslucent() const { return m_pixelsUploadedTranslucent; }
-    int tilesCulledForUpload() const { return m_tilesCulledForUpload; }
-
-private:
-    enum MetricsType {
-        UpdateAndCommit,
-        DrawingToScreen
-    };
-
-    explicit CCOverdrawMetrics(bool recordMetricsForFrame);
-
-    template<typename LayerTreeHostType>
-    void recordMetricsInternal(MetricsType, const LayerTreeHostType*) const;
-
-    // When false this class is a giant no-op.
-    bool m_recordMetricsForFrame;
-
-    // These values are used for saving metrics during update/commit.
-
-    // Count of pixels that were painted due to invalidation.
-    float m_pixelsPainted;
-    // Count of pixels uploaded to textures and known to be opaque.
-    float m_pixelsUploadedOpaque;
-    // Count of pixels uploaded to textures and not known to be opaque.
-    float m_pixelsUploadedTranslucent;
-    // Count of tiles that were invalidated but not uploaded.
-    int m_tilesCulledForUpload;
-    // Count the number of bytes in contents textures.
-    unsigned long long m_contentsTextureUseBytes;
-    // Count the number of bytes in RenderSurface textures.
-    unsigned long long m_renderSurfaceTextureUseBytes;
-
-    // These values are used for saving metrics during draw.
-
-    // Count of pixels that are opaque (and thus occlude). Ideally this is no more than wiewport width x height.
-    float m_pixelsDrawnOpaque;
-    // Count of pixels that are possibly translucent, and cannot occlude.
-    float m_pixelsDrawnTranslucent;
-    // Count of pixels not drawn as they are occluded by somthing opaque.
-    float m_pixelsCulledForDrawing;
-};
-
-} // namespace cc
-
-#endif
+// Temporary forwarding header
+#include "cc/overdraw_metrics.h"