Update the nine patch layer to use UI resources

cc/resources/ui_resource.h

+// Copyright 2013 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_RESOURCES_UI_RESOURCE_H_
+#define CC_RESOURCES_UI_RESOURCE_H_
+
+#include "base/memory/ref_counted.h"
+#include "cc/base/cc_export.h"
+#include "cc/resources/ui_resource_bitmap.h"
+#include "cc/resources/ui_resource_client.h"
+#include "ui/gfx/size.h"
+
+namespace cc {
+
+class CC_EXPORT UIResource {
+ public:
+  virtual UIResourceId id() = 0;
+  virtual gfx::Size GetSize() = 0;
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_UI_RESOURCE_H_