Remove parts of //cc we aren't using

cc/blink/web_content_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_CONTENT_LAYER_IMPL_H_
-#define CC_BLINK_WEB_CONTENT_LAYER_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/blink/cc_blink_export.h"
-#include "cc/blink/web_layer_impl.h"
-#include "cc/layers/content_layer_client.h"
-#include "third_party/WebKit/public/platform/WebContentLayer.h"
-
-namespace cc {
-class IntRect;
-class FloatRect;
-}
-
-namespace blink {
-class WebContentLayerClient;
-}
-
-namespace cc_blink {
-
-class WebContentLayerImpl : public blink::WebContentLayer,
-                            public cc::ContentLayerClient {
- public:
-  CC_BLINK_EXPORT explicit WebContentLayerImpl(blink::WebContentLayerClient*);
-
-  // WebContentLayer implementation.
-  virtual blink::WebLayer* layer();
-  virtual void setDoubleSided(bool double_sided);
-  virtual void setDrawCheckerboardForMissingTiles(bool checkerboard);
-
- protected:
-  virtual ~WebContentLayerImpl();
-
-  // ContentLayerClient implementation.
-  void PaintContents(SkCanvas* canvas,
-                     const gfx::Rect& clip,
-                     PaintingControlSetting painting_control) override;
-  scoped_refptr<cc::DisplayItemList> PaintContentsToDisplayList(
-      const gfx::Rect& clip,
-      PaintingControlSetting painting_control) override;
-  bool FillsBoundsCompletely() const override;
-
-  scoped_ptr<WebLayerImpl> layer_;
-  blink::WebContentLayerClient* client_;
-  bool draws_content_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WebContentLayerImpl);
-};
-
-}  // namespace cc_blink
-
-#endif  // CC_BLINK_WEB_CONTENT_LAYER_IMPL_H_