Remove unused class WebNinePatchLayerImpl.

cc/blink/web_nine_patch_layer_impl.h

-// Copyright 2014 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_BLINK_WEB_NINE_PATCH_LAYER_IMPL_H_
-#define CC_BLINK_WEB_NINE_PATCH_LAYER_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/blink/cc_blink_export.h"
-#include "third_party/WebKit/public/platform/WebNinePatchLayer.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace cc_blink {
-
-class WebLayerImpl;
-
-class WebNinePatchLayerImpl : public blink::WebNinePatchLayer {
- public:
-  CC_BLINK_EXPORT WebNinePatchLayerImpl();
-  virtual ~WebNinePatchLayerImpl();
-
-  // blink::WebNinePatchLayer implementation.
-  virtual blink::WebLayer* layer();
-
-  virtual void setBitmap(const SkBitmap& bitmap);
-  virtual void setAperture(const blink::WebRect& aperture);
-  virtual void setBorder(const blink::WebRect& border);
-
- private:
-  scoped_ptr<WebLayerImpl> layer_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebNinePatchLayerImpl);
-};
-
-}  // namespace cc_blink
-
-#endif  // CC_BLINK_WEB_NINE_PATCH_LAYER_IMPL_H_