cc: Create a Region class that wraps SkRegion, to replace use of WebCore::Region.

cc/layer.h

 // Copyright 2010 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_LAYER_H_
 #define CC_LAYER_H_
 
-#include "Region.h"
 #include "base/memory/ref_counted.h"
 #include "cc/cc_export.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/occlusion_tracker.h"
+#include "cc/region.h"
 #include "cc/render_surface.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/rect_f.h"
 #include <public/WebFilterOperations.h>
 #include <public/WebTransformationMatrix.h>
 #include <string>
 #include <vector>
 
 namespace WebKit {
@@ skipping 384 matching lines @@
 
     WebKit::WebAnimationDelegate* m_layerAnimationDelegate;
     WebKit::WebLayerScrollClient* m_layerScrollClient;
 };
 
 void sortLayers(std::vector<scoped_refptr<Layer> >::iterator, std::vector<scoped_refptr<Layer> >::iterator, void*);
 
 }  // namespace cc
 
 #endif  // CC_LAYER_H_