Remove parts of //cc we aren't using

cc/layers/io_surface_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_IO_SURFACE_LAYER_IMPL_H_
-#define CC_LAYERS_IO_SURFACE_LAYER_IMPL_H_
-
-#include <string>
-
-#include "cc/base/cc_export.h"
-#include "cc/layers/layer_impl.h"
-#include "ui/gfx/geometry/size.h"
-
-namespace cc {
-
-class CC_EXPORT IOSurfaceLayerImpl : public LayerImpl {
- public:
-  static scoped_ptr<IOSurfaceLayerImpl> Create(LayerTreeImpl* tree_impl,
-                                               int id) {
-    return make_scoped_ptr(new IOSurfaceLayerImpl(tree_impl, id));
-  }
-  ~IOSurfaceLayerImpl() override;
-
-  void SetIOSurfaceProperties(unsigned io_surface_id, const gfx::Size& size);
-
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void PushPropertiesTo(LayerImpl* layer_tree_impl) override;
-
-  void AppendQuads(RenderPass* render_pass,
-                   AppendQuadsData* append_quads_data) override;
-
-  bool WillDraw(DrawMode draw_mode,
-                ResourceProvider* resource_provider) override;
-  void ReleaseResources() override;
-
- private:
-  IOSurfaceLayerImpl(LayerTreeImpl* tree_impl, int id);
-
-  void DestroyResource();
-
-  const char* LayerTypeAsString() const override;
-
-  unsigned io_surface_id_;
-  gfx::Size io_surface_size_;
-  bool io_surface_changed_;
-  unsigned io_surface_resource_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(IOSurfaceLayerImpl);
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_IO_SURFACE_LAYER_IMPL_H_