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

cc/layer.h

Index: cc/layer.h
diff --git a/cc/layer.h b/cc/layer.h
index 0c4b35f9f7d43c09d93221f91bd2f80e77316e0b..7ac72aebfc9d62e3b923660ff18c90e883c498e2 100644
--- a/cc/layer.h
+++ b/cc/layer.h
@@ -5,7 +5,6 @@
 #ifndef LayerChromium_h
 #define LayerChromium_h
 
-#include "IntPoint.h"
 #include "Region.h"
 #include "base/memory/ref_counted.h"
 #include "cc/cc_export.h"
@@ -129,11 +128,11 @@ public:
     const gfx::Rect& visibleContentRect() const { return m_visibleContentRect; }
     void setVisibleContentRect(const gfx::Rect& visibleContentRect) { m_visibleContentRect = visibleContentRect; }
 
-    void setScrollPosition(const IntPoint&);
-    const IntPoint& scrollPosition() const { return m_scrollPosition; }
+    void setScrollOffset(gfx::Vector2d);
+    gfx::Vector2d scrollOffset() const { return m_scrollOffset; }
 
-    void setMaxScrollPosition(const IntSize&);
-    const IntSize& maxScrollPosition() const { return m_maxScrollPosition; }
+    void setMaxScrollOffset(gfx::Vector2d);
+    gfx::Vector2d maxScrollOffset() const { return m_maxScrollOffset; }
 
     void setScrollable(bool);
     bool scrollable() const { return m_scrollable; }
@@ -156,7 +155,7 @@ public:
     bool forceRenderSurface() const { return m_forceRenderSurface; }
     void setForceRenderSurface(bool);
 
-    IntSize scrollDelta() const { return IntSize(); }
+    gfx::Vector2d scrollDelta() const { return gfx::Vector2d(); }
 
     void setImplTransform(const WebKit::WebTransformationMatrix&);
     const WebKit::WebTransformationMatrix& implTransform() const { return m_implTransform; }
@@ -344,8 +343,8 @@ private:
     // Uses layer's content space.
     gfx::Rect m_visibleContentRect;
 
-    IntPoint m_scrollPosition;
-    IntSize m_maxScrollPosition;
+    gfx::Vector2d m_scrollOffset;
+    gfx::Vector2d m_maxScrollOffset;
     bool m_scrollable;
     bool m_shouldScrollOnMainThread;
     bool m_haveWheelEventHandlers;