[cc] Rename all cc/ filenames to Chromium style

cc/CCLayerTreeHostCommon.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 CCLayerTreeHostCommon_h
-#define CCLayerTreeHostCommon_h
-
-#include "base/memory/ref_counted.h"
-#include "cc/scoped_ptr_vector.h"
-#include "IntRect.h"
-#include "IntSize.h"
-#include <public/WebTransformationMatrix.h>
-#include <wtf/Vector.h>
-
-namespace cc {
-
-class CCLayerImpl;
-class CCLayerSorter;
-class LayerChromium;
-
-class CCLayerTreeHostCommon {
-public:
-    static IntRect calculateVisibleRect(const IntRect& targetSurfaceRect, const IntRect& layerBoundRect, const WebKit::WebTransformationMatrix&);
-
-    static void calculateDrawTransforms(LayerChromium* rootLayer, const IntSize& deviceViewportSize, float deviceScaleFactor, int maxTextureSize, std::vector<scoped_refptr<LayerChromium> >& renderSurfaceLayerList);
-    static void calculateDrawTransforms(CCLayerImpl* rootLayer, const IntSize& deviceViewportSize, float deviceScaleFactor, CCLayerSorter*, int maxTextureSize, std::vector<CCLayerImpl*>& renderSurfaceLayerList);
-
-    // Performs hit testing for a given renderSurfaceLayerList.
-    static CCLayerImpl* findLayerThatIsHitByPoint(const IntPoint& viewportPoint, std::vector<CCLayerImpl*>& renderSurfaceLayerList);
-
-    template<typename LayerType> static bool renderSurfaceContributesToTarget(LayerType*, int targetSurfaceLayerID);
-
-    // Returns a layer with the given id if one exists in the subtree starting
-    // from the given root layer (including mask and replica layers).
-    template<typename LayerType> static LayerType* findLayerInSubtree(LayerType* rootLayer, int layerId);
-
-    static LayerChromium* getChildAsRawPtr(const std::vector<scoped_refptr<LayerChromium> >& children, size_t index)
-    {
-        return children[index].get();
-    }
-
-    static CCLayerImpl* getChildAsRawPtr(const ScopedPtrVector<CCLayerImpl>& children, size_t index)
-    {
-        return children[index];
-    }
-
-    struct ScrollUpdateInfo {
-        int layerId;
-        IntSize scrollDelta;
-    };
-};
-
-struct CCScrollAndScaleSet {
-    CCScrollAndScaleSet();
-    ~CCScrollAndScaleSet();
-
-    Vector<CCLayerTreeHostCommon::ScrollUpdateInfo> scrolls;
-    float pageScaleDelta;
-};
-
-template<typename LayerType>
-bool CCLayerTreeHostCommon::renderSurfaceContributesToTarget(LayerType* layer, int targetSurfaceLayerID)
-{
-    // A layer will either contribute its own content, or its render surface's content, to
-    // the target surface. The layer contributes its surface's content when both the
-    // following are true:
-    //  (1) The layer actually has a renderSurface, and
-    //  (2) The layer's renderSurface is not the same as the targetSurface.
-    //
-    // Otherwise, the layer just contributes itself to the target surface.
-
-    return layer->renderSurface() && layer->id() != targetSurfaceLayerID;
-}
-
-template<typename LayerType>
-LayerType* CCLayerTreeHostCommon::findLayerInSubtree(LayerType* rootLayer, int layerId)
-{
-    if (rootLayer->id() == layerId)
-        return rootLayer;
-
-    if (rootLayer->maskLayer() && rootLayer->maskLayer()->id() == layerId)
-        return rootLayer->maskLayer();
-
-    if (rootLayer->replicaLayer() && rootLayer->replicaLayer()->id() == layerId)
-        return rootLayer->replicaLayer();
-
-    for (size_t i = 0; i < rootLayer->children().size(); ++i) {
-        if (LayerType* found = findLayerInSubtree(getChildAsRawPtr(rootLayer->children(), i), layerId))
-            return found;
-    }
-    return 0;
-}
-
-} // namespace cc
-
-#endif
+// Temporary forwarding header
+#include "cc/layer_tree_host_common.h"