[cc] Rename all cc/ filenames to Chromium style

cc/CCDamageTracker.h

-// Copyright 2011 The Chromium Authors. All rights reserved.
+// 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 CCDamageTracker_h
-#define CCDamageTracker_h
-
-#include "base/memory/scoped_ptr.h"
-#include "FloatRect.h"
-#include <vector>
-#include <wtf/HashMap.h>
-#include <wtf/Vector.h>
-
-namespace WebKit {
-class WebFilterOperations;
-}
-
-namespace cc {
-
-class CCLayerImpl;
-class CCRenderSurface;
-
-// Computes the region where pixels have actually changed on a RenderSurface. This region is used
-// to scissor what is actually drawn to the screen to save GPU computation and bandwidth.
-class CCDamageTracker {
-public:
-    static scoped_ptr<CCDamageTracker> create();
-    ~CCDamageTracker();
-
-    void didDrawDamagedArea() { m_currentDamageRect = FloatRect(); }
-    void forceFullDamageNextUpdate() { m_forceFullDamageNextUpdate = true; }
-    void updateDamageTrackingState(const std::vector<CCLayerImpl*>& layerList, int targetSurfaceLayerID, bool targetSurfacePropertyChangedOnlyFromDescendant, const IntRect& targetSurfaceContentRect, CCLayerImpl* targetSurfaceMaskLayer, const WebKit::WebFilterOperations&);
-
-    const FloatRect& currentDamageRect() { return m_currentDamageRect; }
-
-private:
-    CCDamageTracker();
-
-    FloatRect trackDamageFromActiveLayers(const std::vector<CCLayerImpl*>& layerList, int targetSurfaceLayerID);
-    FloatRect trackDamageFromSurfaceMask(CCLayerImpl* targetSurfaceMaskLayer);
-    FloatRect trackDamageFromLeftoverRects();
-
-    FloatRect removeRectFromCurrentFrame(int layerID, bool& layerIsNew);
-    void saveRectForNextFrame(int layerID, const FloatRect& targetSpaceRect);
-
-    // These helper functions are used only in trackDamageFromActiveLayers().
-    void extendDamageForLayer(CCLayerImpl*, FloatRect& targetDamageRect);
-    void extendDamageForRenderSurface(CCLayerImpl*, FloatRect& targetDamageRect);
-
-    // To correctly track exposed regions, two hashtables of rects are maintained.
-    // The "current" map is used to compute exposed regions of the current frame, while
-    // the "next" map is used to collect layer rects that are used in the next frame.
-    typedef HashMap<int, FloatRect> RectMap;
-    scoped_ptr<RectMap> m_currentRectHistory;
-    scoped_ptr<RectMap> m_nextRectHistory;
-
-    FloatRect m_currentDamageRect;
-    bool m_forceFullDamageNextUpdate;
-};
-
-} // namespace cc
-
-#endif // CCDamageTracker_h
+// Temporary forwarding header
+#include "cc/damage_tracker.h"