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

cc/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_PROXY_H_
 #define CC_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/time.h"
 #include <public/WebCompositorOutputSurface.h>
 #include "cc/cc_export.h"
 
 namespace gfx {
 class Rect;
+class Vector2d;
 }
 
 namespace cc {
 
 class Thread;
-class IntSize;
 struct RenderingStats;
 struct RendererCapabilities;
 
 // Abstract class responsible for proxying commands from the main-thread side of
 // the compositor over to the compositor implementation.
 class CC_EXPORT Proxy {
 public:
     static void setMainThread(Thread*);
     static Thread* mainThread();
 
     static bool hasImplThread();
     static void setImplThread(Thread*);
     static Thread* implThread();
 
     // Returns 0 if the current thread is neither the main thread nor the impl thread.
     static Thread* currentThread();
 
     virtual ~Proxy();
 
     virtual bool compositeAndReadback(void *pixels, const gfx::Rect&) = 0;
 
-    virtual void startPageScaleAnimation(const IntSize& targetPosition, bool useAnchor, float scale, base::TimeDelta duration) = 0;
+    virtual void startPageScaleAnimation(gfx::Vector2d targetOffset, bool useAnchor, float scale, base::TimeDelta duration) = 0;
 
     virtual void finishAllRendering() = 0;
 
     virtual bool isStarted() const = 0;
 
     // Attempts to initialize a context to use for rendering. Returns false if the context could not be created.
     // The context will not be used and no frames may be produced until initializeRenderer() is called.
     virtual bool initializeContext() = 0;
 
     // Indicates that the compositing surface associated with our context is ready to use.
@@ skipping 74 matching lines @@
 #ifndef NDEBUG
         DCHECK(Proxy::isMainThreadBlocked());
         Proxy::setMainThreadBlocked(false);
 #endif
     }
 };
 
 }
 
 #endif  // CC_PROXY_H_