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

cc/scrollbar_geometry_fixed_thumb.h

Index: cc/scrollbar_geometry_fixed_thumb.h
diff --git a/cc/scrollbar_geometry_fixed_thumb.h b/cc/scrollbar_geometry_fixed_thumb.h
index 5ddacc147712544ec5470380bf6f30d1669b587a..a4054b8d394118e7510bcc84def326f0a0ab7d97 100644
--- a/cc/scrollbar_geometry_fixed_thumb.h
+++ b/cc/scrollbar_geometry_fixed_thumb.h
@@ -5,9 +5,9 @@
 #ifndef CCScrollbarGeometryFixedThumb_h
 #define CCScrollbarGeometryFixedThumb_h
 
-#include "IntSize.h"
 #include "cc/cc_export.h"
 #include "cc/scrollbar_geometry_stub.h"
+#include "ui/gfx/size.h"
 
 namespace cc {
 
@@ -32,7 +32,7 @@ public:
 private:
     explicit ScrollbarGeometryFixedThumb(scoped_ptr<WebKit::WebScrollbarThemeGeometry>);
 
-    IntSize m_thumbSize;
+    gfx::Size m_thumbSize;
 };
 
 }