Remove parts of //cc we aren't using

cc/layers/solid_color_layer_impl.h

-// Copyright 2012 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_LAYER_IMPL_H_
-#define CC_LAYERS_SOLID_COLOR_LAYER_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/base/cc_export.h"
-#include "cc/layers/layer_impl.h"
-
-namespace cc {
-
-class CC_EXPORT SolidColorLayerImpl : public LayerImpl {
- public:
-  static scoped_ptr<SolidColorLayerImpl> Create(LayerTreeImpl* tree_impl,
-                                                int id) {
-    return make_scoped_ptr(new SolidColorLayerImpl(tree_impl, id));
-  }
-
-  static void AppendSolidQuads(RenderPass* render_pass,
-                               const Occlusion& occlusion_in_content_space,
-                               SharedQuadState* shared_quad_state,
-                               const gfx::Rect& visible_content_rect,
-                               SkColor color,
-                               AppendQuadsData* append_quads_data);
-
-  ~SolidColorLayerImpl() override;
-
-  // LayerImpl overrides.
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override;
-
- protected:
-  SolidColorLayerImpl(LayerTreeImpl* tree_impl, int id);
-
- private:
-  const char* LayerTypeAsString() const override;
-
-  DISALLOW_COPY_AND_ASSIGN(SolidColorLayerImpl);
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_SOLID_COLOR_LAYER_IMPL_H_