Remove parts of //cc we aren't using

cc/resources/skpicture_content_layer_updater.h

-// Copyright 2011 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_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_
-#define CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_
-
-#include "cc/resources/content_layer_updater.h"
-#include "skia/ext/refptr.h"
-#include "third_party/skia/include/core/SkPicture.h"
-
-class SkCanvas;
-
-namespace cc {
-
-class LayerPainter;
-
-// This class records the content_rect into an SkPicture. Subclass provides
-// SkCanvas to DrawPicture() for tile updating based on this recorded picture.
-class SkPictureContentLayerUpdater : public ContentLayerUpdater {
- protected:
-  SkPictureContentLayerUpdater(
-      scoped_ptr<LayerPainter> painter,
-      int layer_id);
-  ~SkPictureContentLayerUpdater() override;
-
-  void PrepareToUpdate(const gfx::Size& content_size,
-                       const gfx::Rect& paint_rect,
-                       const gfx::Size& tile_size,
-                       float contents_width_scale,
-                       float contents_height_scale) override;
-  void DrawPicture(SkCanvas* canvas);
-
- private:
-  skia::RefPtr<SkPicture> picture_;
-
-  DISALLOW_COPY_AND_ASSIGN(SkPictureContentLayerUpdater);
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCES_SKPICTURE_CONTENT_LAYER_UPDATER_H_