More old files deletion.

ui/gfx/image/image_skia_source.h

-// Copyright (c) 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 UI_GFX_IMAGE_IMAGE_SKIA_SOURCE_H_
-#define UI_GFX_IMAGE_IMAGE_SKIA_SOURCE_H_
-
-#include <vector>
-
-#include "ui/gfx/gfx_export.h"
-
-namespace gfx {
-
-class ImageSkiaRep;
-
-class GFX_EXPORT ImageSkiaSource {
- public:
-  virtual ~ImageSkiaSource() {}
-
-  // Returns the ImageSkiaRep for the given |scale|. ImageSkia caches the
-  // returned ImageSkiaRep and calls this method only if it doesn't have
-  // ImageSkiaRep for given |scale|. There is no need for the implementation to
-  // cache the image.
-  virtual gfx::ImageSkiaRep GetImageForScale(float scale) = 0;
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_IMAGE_IMAGE_SKIA_SOURCE_H_