Remove parts of //cc we aren't using

cc/blink/scrollbar_impl.h

Index: cc/blink/scrollbar_impl.h
diff --git a/cc/blink/scrollbar_impl.h b/cc/blink/scrollbar_impl.h
deleted file mode 100644
index fa5f0428973c8973308f385660fa8cb6bbb8ff34..0000000000000000000000000000000000000000
--- a/cc/blink/scrollbar_impl.h
+++ /dev/null
@@ -1,50 +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_SCROLLBAR_IMPL_H_
-#define CC_BLINK_SCROLLBAR_IMPL_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "cc/input/scrollbar.h"
-#include "third_party/WebKit/public/platform/WebScrollbarThemePainter.h"
-
-namespace blink {
-class WebScrollbar;
-class WebScrollbarThemeGeometry;
-}
-
-namespace cc_blink {
-
-class ScrollbarImpl : public cc::Scrollbar {
- public:
-  ScrollbarImpl(scoped_ptr<blink::WebScrollbar> scrollbar,
-                blink::WebScrollbarThemePainter painter,
-                scoped_ptr<blink::WebScrollbarThemeGeometry> geometry);
-  ~ScrollbarImpl() override;
-
-  // cc::Scrollbar implementation.
-  cc::ScrollbarOrientation Orientation() const override;
-  bool IsLeftSideVerticalScrollbar() const override;
-  bool HasThumb() const override;
-  bool IsOverlay() const override;
-  gfx::Point Location() const override;
-  int ThumbThickness() const override;
-  int ThumbLength() const override;
-  gfx::Rect TrackRect() const override;
-  void PaintPart(SkCanvas* canvas,
-                 cc::ScrollbarPart part,
-                 const gfx::Rect& content_rect) override;
-
- private:
-  scoped_ptr<blink::WebScrollbar> scrollbar_;
-  blink::WebScrollbarThemePainter painter_;
-  scoped_ptr<blink::WebScrollbarThemeGeometry> geometry_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScrollbarImpl);
-};
-
-}  // namespace cc_blink
-
-#endif  // CC_BLINK_SCROLLBAR_IMPL_H_