cc: Rename cc classes and members to match filenames

cc/occlusion_tracker.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 CCOcclusionTracker_h
 #define CCOcclusionTracker_h
 
 #include "base/basictypes.h"
 #include "CCLayerIterator.h"
 #include "FloatQuad.h"
 #include "Region.h"
 
 namespace cc {
-class CCOverdrawMetrics;
-class CCLayerImpl;
-class CCRenderSurface;
-class LayerChromium;
-class RenderSurfaceChromium;
+class OverdrawMetrics;
+class LayerImpl;
+class RenderSurfaceImpl;
+class Layer;
+class RenderSurface;
 
 // This class is used to track occlusion of layers while traversing them in a front-to-back order. As each layer is visited, one of the
 // methods in this class is called to notify it about the current target surface.
 // Then, occlusion in the content space of the current layer may be queried, via methods such as occluded() and unoccludedContentRect().
-// If the current layer owns a RenderSurface, then occlusion on that RenderSurface may also be queried via surfaceOccluded() and surfaceUnoccludedContentRect().
+// If the current layer owns a RenderSurfaceImpl, then occlusion on that RenderSurfaceImpl may also be queried via surfaceOccluded() and surfaceUnoccludedContentRect().
 // Finally, once finished with the layer, occlusion behind the layer should be marked by calling markOccludedBehindLayer().
 template<typename LayerType, typename RenderSurfaceType>
-class CCOcclusionTrackerBase {
+class OcclusionTrackerBase {
 public:
-    CCOcclusionTrackerBase(IntRect rootTargetRect, bool recordMetricsForFrame);
+    OcclusionTrackerBase(IntRect rootTargetRect, bool recordMetricsForFrame);
 
-    // Called at the beginning of each step in the CCLayerIterator's front-to-back traversal.
-    void enterLayer(const CCLayerIteratorPosition<LayerType>&);
-    // Called at the end of each step in the CCLayerIterator's front-to-back traversal.
-    void leaveLayer(const CCLayerIteratorPosition<LayerType>&);
+    // Called at the beginning of each step in the LayerIterator's front-to-back traversal.
+    void enterLayer(const LayerIteratorPosition<LayerType>&);
+    // Called at the end of each step in the LayerIterator's front-to-back traversal.
+    void leaveLayer(const LayerIteratorPosition<LayerType>&);
 
     // Returns true if the given rect in content space for the layer is fully occluded in either screen space or the layer's target surface.
     bool occluded(const LayerType*, const IntRect& contentRect, bool* hasOcclusionFromOutsideTargetSurface = 0) const;
     // Gives an unoccluded sub-rect of |contentRect| in the content space of the layer. Used when considering occlusion for a layer that paints/draws something.
     IntRect unoccludedContentRect(const LayerType*, const IntRect& contentRect, bool* hasOcclusionFromOutsideTargetSurface = 0) const;
 
     // Gives an unoccluded sub-rect of |contentRect| in the content space of the renderTarget owned by the layer.
     // Used when considering occlusion for a contributing surface that is rendering into another target.
     IntRect unoccludedContributingSurfaceContentRect(const LayerType*, bool forReplica, const IntRect& contentRect, bool* hasOcclusionFromOutsideTargetSurface = 0) const;
 
     // Report operations for recording overdraw metrics.
-    CCOverdrawMetrics& overdrawMetrics() const { return *m_overdrawMetrics.get(); }
+    OverdrawMetrics& overdrawMetrics() const { return *m_overdrawMetrics.get(); }
 
     // Gives the region of the screen that is not occluded by something opaque.
     Region computeVisibleRegionInScreen() const { return subtract(Region(m_rootTargetRect), m_stack.last().occlusionInScreen); }
 
     void setMinimumTrackingSize(const IntSize& size) { m_minimumTrackingSize = size; }
 
     // The following is used for visualization purposes.
     void setOccludingScreenSpaceRectsContainer(Vector<IntRect>* rects) { m_occludingScreenSpaceRects = rects; }
 
 protected:
     struct StackObject {
         StackObject() : target(0) { }
         StackObject(const LayerType* target) : target(target) { }
         const LayerType* target;
         Region occlusionInScreen;
         Region occlusionInTarget;
     };
 
-    // The stack holds occluded regions for subtrees in the RenderSurface-Layer tree, so that when we leave a subtree we may
+    // The stack holds occluded regions for subtrees in the RenderSurfaceImpl-Layer tree, so that when we leave a subtree we may
     // apply a mask to it, but not to the parts outside the subtree.
     // - The first time we see a new subtree under a target, we add that target to the top of the stack. This can happen as a layer representing itself, or as a target surface.
     // - When we visit a target surface, we apply its mask to its subtree, which is at the top of the stack.
     // - When we visit a layer representing itself, we add its occlusion to the current subtree, which is at the top of the stack.
     // - When we visit a layer representing a contributing surface, the current target will never be the top of the stack since we just came from the contributing surface.
     // We merge the occlusion at the top of the stack with the new current subtree. This new target is pushed onto the stack if not already there.
     Vector<StackObject, 1> m_stack;
 
     // Allow tests to override this.
     virtual IntRect layerClipRectInTarget(const LayerType*) const;
 
 private:
     // Called when visiting a layer representing itself. If the target was not already current, then this indicates we have entered a new surface subtree.
     void enterRenderTarget(const LayerType* newTarget);
 
     // Called when visiting a layer representing a target surface. This indicates we have visited all the layers within the surface, and we may
     // perform any surface-wide operations.
     void finishedRenderTarget(const LayerType* finishedTarget);
 
     // Called when visiting a layer representing a contributing surface. This indicates that we are leaving our current surface, and
     // entering the new one. We then perform any operations required for merging results from the child subtree into its parent.
     void leaveToRenderTarget(const LayerType* newTarget);
 
     // Add the layer's occlusion to the tracked state.
     void markOccludedBehindLayer(const LayerType*);
 
     IntRect m_rootTargetRect;
-    scoped_ptr<CCOverdrawMetrics> m_overdrawMetrics;
+    scoped_ptr<OverdrawMetrics> m_overdrawMetrics;
     IntSize m_minimumTrackingSize;
 
     // This is used for visualizing the occlusion tracking process.
     Vector<IntRect>* m_occludingScreenSpaceRects;
 
-    DISALLOW_COPY_AND_ASSIGN(CCOcclusionTrackerBase);
+    DISALLOW_COPY_AND_ASSIGN(OcclusionTrackerBase);
 };
 
-typedef CCOcclusionTrackerBase<LayerChromium, RenderSurfaceChromium> CCOcclusionTracker;
-typedef CCOcclusionTrackerBase<CCLayerImpl, CCRenderSurface> CCOcclusionTrackerImpl;
+typedef OcclusionTrackerBase<Layer, RenderSurface> OcclusionTracker;
+typedef OcclusionTrackerBase<LayerImpl, RenderSurfaceImpl> OcclusionTrackerImpl;
 
 }
 #endif // CCOcclusionTracker_h