Bug 564993. Part 1: Remove CopyFrom API, it won't be used. r=Bas

gfx/layers/Layers.h

@@ -364,20 +364,6 @@ public:
    */
   virtual void EndDrawing() = 0;
 
-  /**
-   * DRAWING PHASE ONLY
-   * Copy the aRegion contents from aSource into this layer, offsetting
-   * them by aDelta. The validity is also copied, so invalid areas in
-   * aSource will make corresponding areas of this layer invalid. You
-   * must not call this after BeginDrawing/EndDrawing on this layer.
-   * 
-   * aSource must be this layer or a layer after this layer in a
-   * preorder traversal of the layer tree.
-   */
-  virtual void CopyFrom(ThebesLayer* aSource,
-                        const nsIntRegion& aRegion,
-                        const nsIntPoint& aDelta) = 0;
-
 protected:
   ThebesLayer(LayerManager* aManager, void* aImplData)
     : Layer(aManager, aImplData) {}

gfx/layers/basic/BasicLayers.cpp

@@ -239,9 +239,6 @@ public:
 
   virtual gfxContext* BeginDrawing(nsIntRegion* aRegionToDraw);
   virtual void EndDrawing();
-  virtual void CopyFrom(ThebesLayer* aSource,
-                        const nsIntRegion& aRegion,
-                        const nsIntPoint& aDelta);
 
 protected:
   BasicLayerManager* BasicManager()
@@ -276,22 +273,6 @@ BasicThebesLayer::EndDrawing()
                "Not currently drawing this layer");
 }
 
-void
-BasicThebesLayer::CopyFrom(ThebesLayer* aSource,
-                           const nsIntRegion& aRegion,
-                           const nsIntPoint& aDelta)
-{
-  NS_ASSERTION(!BasicManager()->IsBeforeInTree(aSource, this),
-               "aSource must not be before this layer in tree");
-  NS_ASSERTION(BasicManager()->IsBeforeInTree(BasicManager()->GetLastPainted(), this),
-               "Cannot copy into a layer already painted");
-  NS_ASSERTION(BasicManager()->InDrawing(),
-               "Can only draw in drawing phase");
-  // Nothing to do here since we have no retained buffers. Our
-  // valid region is empty (since we haven't painted this layer yet),
-  // so no need to mark anything invalid.
-}
-
 class BasicImageLayer : public ImageLayer, BasicImplData {
 public:
   BasicImageLayer(BasicLayerManager* aLayerManager) :

gfx/layers/opengl/ThebesLayerOGL.cpp

@@ -218,14 +218,6 @@ ThebesLayerOGL::EndDrawing()
   mContext = NULL;
 }
 
-void
-ThebesLayerOGL::CopyFrom(ThebesLayer* aSource,
-                           const nsIntRegion& aRegion,
-                           const nsIntPoint& aDelta)
-{
-  // XXX - Roc says this is going away in the API. Ignore it for now.
-}
-
 LayerOGL::LayerType
 ThebesLayerOGL::GetType()
 {

gfx/layers/opengl/ThebesLayerOGL.h

@@ -63,10 +63,6 @@ public:
 
   void EndDrawing();
 
-  void CopyFrom(ThebesLayer* aSource,
-                const nsIntRegion& aRegion,
-                const nsIntPoint& aDelta);
-
   /** LayerOGL implementation */
   LayerType GetType();
   Layer* GetLayer();