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

cc/single_thread_proxy.h

 // Copyright 2011 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 CC_SINGLE_THREAD_PROXY_H_
 #define CC_SINGLE_THREAD_PROXY_H_
 
 #include <limits>
 
 #include "base/time.h"
 #include "cc/animation_events.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/proxy.h"
 
 namespace cc {
 
 class LayerTreeHost;
 
 class SingleThreadProxy : public Proxy, LayerTreeHostImplClient {
 public:
     static scoped_ptr<Proxy> create(LayerTreeHost*);
     virtual ~SingleThreadProxy();
 
     // Proxy implementation
     virtual bool compositeAndReadback(void *pixels, const gfx::Rect&) OVERRIDE;
-    virtual void startPageScaleAnimation(const IntSize& targetPosition, bool useAnchor, float scale, base::TimeDelta duration) OVERRIDE;
+    virtual void startPageScaleAnimation(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration) OVERRIDE;
     virtual void finishAllRendering() OVERRIDE;
     virtual bool isStarted() const OVERRIDE;
     virtual bool initializeContext() OVERRIDE;
     virtual void setSurfaceReady() OVERRIDE;
     virtual void setVisible(bool) OVERRIDE;
     virtual bool initializeRenderer() OVERRIDE;
     virtual bool recreateContext() OVERRIDE;
     virtual void renderingStats(RenderingStats*) OVERRIDE;
     virtual const RendererCapabilities& rendererCapabilities() const OVERRIDE;
     virtual void loseContext() OVERRIDE;
@@ skipping 91 matching lines @@
 // satisfy assertion checks
 class DebugScopedSetImplThreadAndMainThreadBlocked {
 private:
     DebugScopedSetImplThread m_implThread;
     DebugScopedSetMainThreadBlocked m_mainThreadBlocked;
 };
 
 } // namespace cc
 
 #endif  // CC_SINGLE_THREAD_PROXY_H_