cc: Remove all remaining use of WebCore Rect/Point/Size types from the compositor.

cc/layer_tree_host_client.h

Index: cc/layer_tree_host_client.h
diff --git a/cc/layer_tree_host_client.h b/cc/layer_tree_host_client.h
index 3bec03283e43d608650fae95fcbecc3824a537d0..f6cb7028ab18606bdeca5d4e0c38107e6bc453fb 100644
--- a/cc/layer_tree_host_client.h
+++ b/cc/layer_tree_host_client.h
@@ -7,13 +7,16 @@
 
 #include "base/memory/scoped_ptr.h"
 
+namespace gfx {
+class Vector2d;
+}
+
 namespace WebKit {
 class WebCompositorOutputSurface;
 }
 
 namespace cc {
 class InputHandler;
-class IntSize;
 
 class LayerTreeHostClient {
 public:
@@ -22,7 +25,7 @@ public:
     virtual void didBeginFrame() = 0;
     virtual void animate(double frameBeginTime) = 0;
     virtual void layout() = 0;
-    virtual void applyScrollAndScale(const IntSize& scrollDelta, float pageScale) = 0;
+    virtual void applyScrollAndScale(gfx::Vector2d scrollDelta, float pageScale) = 0;
     virtual scoped_ptr<WebKit::WebCompositorOutputSurface> createOutputSurface() = 0;
     virtual void didRecreateOutputSurface(bool success) = 0;
     virtual scoped_ptr<InputHandler> createInputHandler() = 0;