Update the nine patch layer to use UI resources

cc/resources/scoped_ui_resource.h

Index: cc/resources/scoped_ui_resource.h
diff --git a/cc/resources/scoped_ui_resource.h b/cc/resources/scoped_ui_resource.h
index 628d372c552f2707965b2011731dc3db4b0cc141..79a957340b114027cb93861ce813f9d939dbbf75 100644
--- a/cc/resources/scoped_ui_resource.h
+++ b/cc/resources/scoped_ui_resource.h
@@ -7,6 +7,7 @@
 
 #include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
+#include "cc/resources/ui_resource.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/resources/ui_resource_client.h"
 #include "ui/gfx/size.h"
@@ -15,17 +16,21 @@ namespace cc {
 
 class LayerTreeHost;
 
-class CC_EXPORT ScopedUIResource : public UIResourceClient {
+class CC_EXPORT ScopedUIResource : public UIResourceClient, public UIResource {
  public:
   static scoped_ptr<ScopedUIResource> Create(
       LayerTreeHost* host,
       scoped_refptr<UIResourceBitmap> bitmap);
   virtual ~ScopedUIResource();
 
+  // UIResourceClient
   virtual scoped_refptr<UIResourceBitmap> GetBitmap(
       UIResourceId uid,
       bool resource_lost) OVERRIDE;
-  UIResourceId id() { return id_; }
+
+  // UIResource
+  virtual UIResourceId id() OVERRIDE { return id_; }
+  virtual gfx::Size GetSize() OVERRIDE { return bitmap_->GetSize(); }
 
  protected:
   ScopedUIResource(LayerTreeHost* host, scoped_refptr<UIResourceBitmap> bitmap);