Remove parts of //cc we aren't using

cc/blink/web_scrollbar_layer_impl.h

Index: cc/blink/web_scrollbar_layer_impl.h
diff --git a/cc/blink/web_scrollbar_layer_impl.h b/cc/blink/web_scrollbar_layer_impl.h
deleted file mode 100644
index 14ed66ebb9624c9376c84a93338ddd67b98a9fc2..0000000000000000000000000000000000000000
--- a/cc/blink/web_scrollbar_layer_impl.h
+++ /dev/null
@@ -1,48 +0,0 @@
-// 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_SCROLLBAR_LAYER_IMPL_H_
-#define CC_BLINK_WEB_SCROLLBAR_LAYER_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/blink/cc_blink_export.h"
-#include "third_party/WebKit/public/platform/WebScrollbar.h"
-#include "third_party/WebKit/public/platform/WebScrollbarLayer.h"
-
-namespace blink {
-class WebScrollbarThemeGeometry;
-class WebScrollbarThemePainter;
-}
-
-namespace cc_blink {
-
-class WebLayerImpl;
-
-class WebScrollbarLayerImpl : public blink::WebScrollbarLayer {
- public:
-  CC_BLINK_EXPORT WebScrollbarLayerImpl(
-      blink::WebScrollbar* scrollbar,
-      blink::WebScrollbarThemePainter painter,
-      blink::WebScrollbarThemeGeometry* geometry);
-  CC_BLINK_EXPORT WebScrollbarLayerImpl(
-      blink::WebScrollbar::Orientation orientation,
-      int thumb_thickness,
-      int track_start,
-      bool is_left_side_vertical_scrollbar);
-  virtual ~WebScrollbarLayerImpl();
-
-  // blink::WebScrollbarLayer implementation.
-  virtual blink::WebLayer* layer();
-  virtual void setScrollLayer(blink::WebLayer* layer);
-  virtual void setClipLayer(blink::WebLayer* layer);
-
- private:
-  scoped_ptr<WebLayerImpl> layer_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebScrollbarLayerImpl);
-};
-
-}  // namespace cc_blink
-
-#endif  // CC_BLINK_WEB_SCROLLBAR_LAYER_IMPL_H_