Remove SW rendering path code from BrowserPlugin.

content/renderer/browser_plugin/browser_plugin_backing_store.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 CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_BACKING_STORE_H__
-#define CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_BACKING_STORE_H__
-
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/gfx/size.h"
-#include "ui/gfx/vector2d.h"
-
-class SkCanvas;
-class TransportDIB;
-
-namespace gfx {
-class Canvas;
-class Point;
-class Rect;
-}
-
-namespace content {
-
-// The BrowserPluginBackingStore is a wrapper around an SkBitmap that is used
-// in the software rendering path of the browser plugin. The backing store has
-// two write operations:
-// 1. PaintToBackingStore copies pixel regions to the bitmap.
-// 2. ScrollBackingStore scrolls a region of the bitmap by dx, and dy.
-// These are called in response to changes in the guest relayed via
-// BrowserPluginMsg_UpdateRect. See BrowserPlugin::UpdateRect.
-class BrowserPluginBackingStore {
- public:
-  BrowserPluginBackingStore(const gfx::Size& size, float scale_factor);
-  virtual ~BrowserPluginBackingStore();
-
-  void PaintToBackingStore(
-      const gfx::Rect& bitmap_rect,
-      const std::vector<gfx::Rect>& copy_rects,
-      void* bitmap);
-
-  void ScrollBackingStore(const gfx::Vector2d& delta,
-                          const gfx::Rect& clip_rect,
-                          const gfx::Size& view_size);
-
-  void Clear(SkColor clear_color);
-
-  const gfx::Size& GetSize() const { return size_; }
-
-  const SkBitmap& GetBitmap() const { return bitmap_; }
-
-  float GetScaleFactor() const { return scale_factor_; }
-
- private:
-  gfx::Size size_;
-  SkBitmap bitmap_;
-  scoped_ptr<SkCanvas> canvas_;
-  float scale_factor_;
-
-  DISALLOW_COPY_AND_ASSIGN(BrowserPluginBackingStore);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_BACKING_STORE_H__