Remove parts of //cc we aren't using

cc/layers/painted_scrollbar_layer_impl.h

-// Copyright 2013 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_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
-#define CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/input/scrollbar.h"
-#include "cc/layers/scrollbar_layer_impl_base.h"
-#include "cc/resources/ui_resource_client.h"
-
-namespace cc {
-
-class LayerTreeImpl;
-class ScrollView;
-
-class CC_EXPORT PaintedScrollbarLayerImpl : public ScrollbarLayerImplBase {
- public:
-  static scoped_ptr<PaintedScrollbarLayerImpl> Create(
-      LayerTreeImpl* tree_impl,
-      int id,
-      ScrollbarOrientation orientation);
-  ~PaintedScrollbarLayerImpl() override;
-
-  // LayerImpl implementation.
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void PushPropertiesTo(LayerImpl* layer) override;
-
-  bool WillDraw(DrawMode draw_mode,
-                ResourceProvider* resource_provider) override;
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override;
-  gfx::Rect GetEnclosingRectInTargetSpace() const override;
-
-  void SetThumbThickness(int thumb_thickness);
-  void SetThumbLength(int thumb_length);
-  void SetTrackStart(int track_start);
-  void SetTrackLength(int track_length);
-
-  void set_track_ui_resource_id(UIResourceId uid) {
-    track_ui_resource_id_ = uid;
-  }
-  void set_thumb_ui_resource_id(UIResourceId uid) {
-    thumb_ui_resource_id_ = uid;
-  }
-
-  void set_internal_contents_scale_and_bounds(float content_scale,
-                                              const gfx::Size& content_bounds) {
-    internal_contents_scale_ = content_scale;
-    internal_content_bounds_ = content_bounds;
-  }
-
- protected:
-  PaintedScrollbarLayerImpl(LayerTreeImpl* tree_impl,
-                            int id,
-                            ScrollbarOrientation orientation);
-
-  // ScrollbarLayerImplBase implementation.
-  int ThumbThickness() const override;
-  int ThumbLength() const override;
-  float TrackLength() const override;
-  int TrackStart() const override;
-  bool IsThumbResizable() const override;
-
- private:
-  const char* LayerTypeAsString() const override;
-
-  UIResourceId track_ui_resource_id_;
-  UIResourceId thumb_ui_resource_id_;
-
-  float internal_contents_scale_;
-  gfx::Size internal_content_bounds_;
-
-  int thumb_thickness_;
-  int thumb_length_;
-  int track_start_;
-  int track_length_;
-
-  DISALLOW_COPY_AND_ASSIGN(PaintedScrollbarLayerImpl);
-};
-
-}  // namespace cc
-#endif  // CC_LAYERS_PAINTED_SCROLLBAR_LAYER_IMPL_H_