Remove parts of //cc we aren't using

cc/layers/solid_color_scrollbar_layer_impl.h

Index: cc/layers/solid_color_scrollbar_layer_impl.h
diff --git a/cc/layers/solid_color_scrollbar_layer_impl.h b/cc/layers/solid_color_scrollbar_layer_impl.h
deleted file mode 100644
index df6179d3ef6ae68d5dfdfc15a6cd3572c2eb6d42..0000000000000000000000000000000000000000
--- a/cc/layers/solid_color_scrollbar_layer_impl.h
+++ /dev/null
@@ -1,56 +0,0 @@
-// 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_SOLID_COLOR_SCROLLBAR_LAYER_IMPL_H_
-#define CC_LAYERS_SOLID_COLOR_SCROLLBAR_LAYER_IMPL_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/layers/scrollbar_layer_impl_base.h"
-
-namespace cc {
-
-class CC_EXPORT SolidColorScrollbarLayerImpl : public ScrollbarLayerImplBase {
- public:
-  static scoped_ptr<SolidColorScrollbarLayerImpl> Create(
-      LayerTreeImpl* tree_impl,
-      int id,
-      ScrollbarOrientation orientation,
-      int thumb_thickness,
-      int track_start,
-      bool is_left_side_vertical_scrollbar,
-      bool is_overlay);
-  ~SolidColorScrollbarLayerImpl() override;
-
-  // LayerImpl overrides.
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void PushPropertiesTo(LayerImpl* layer) override;
-
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override;
-
- protected:
-  SolidColorScrollbarLayerImpl(LayerTreeImpl* tree_impl,
-                               int id,
-                               ScrollbarOrientation orientation,
-                               int thumb_thickness,
-                               int track_start,
-                               bool is_left_side_vertical_scrollbar,
-                               bool is_overlay);
-
-  // ScrollbarLayerImplBase implementation.
-  int ThumbThickness() const override;
-  int ThumbLength() const override;
-  float TrackLength() const override;
-  int TrackStart() const override;
-  bool IsThumbResizable() const override;
-
- private:
-  int thumb_thickness_;
-  int track_start_;
-  SkColor color_;
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_SOLID_COLOR_SCROLLBAR_LAYER_IMPL_H_