[cc] Cleanup: remove unused class - CachingBitmapContentLayerUpdater

No one uses this class.

R=enne@chromium.org
BUG=NONE
TEST=NONE(No functional change)

Review URL: https://codereview.chromium.org/127173002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243509 0039d316-1c4b-4281-b951-d872f2087c98

cc/cc.gyp

@@ -302,8 +302,6 @@
         'resources/bitmap_content_layer_updater.h',
         'resources/bitmap_skpicture_content_layer_updater.cc',
         'resources/bitmap_skpicture_content_layer_updater.h',
-        'resources/caching_bitmap_content_layer_updater.cc',
-        'resources/caching_bitmap_content_layer_updater.h',
         'resources/content_layer_updater.cc',
         'resources/content_layer_updater.h',
         'resources/etc1_pixel_ref.cc',

cc/resources/caching_bitmap_content_layer_updater.cc

-// 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.
-
-#include "cc/resources/caching_bitmap_content_layer_updater.h"
-
-#include "base/logging.h"
-#include "cc/resources/layer_painter.h"
-#include "skia/ext/platform_canvas.h"
-
-namespace cc {
-
-scoped_refptr<CachingBitmapContentLayerUpdater>
-CachingBitmapContentLayerUpdater::Create(
-    scoped_ptr<LayerPainter> painter,
-    RenderingStatsInstrumentation* stats_instrumentation,
-    int layer_id) {
-  return make_scoped_refptr(
-      new CachingBitmapContentLayerUpdater(painter.Pass(),
-                                           stats_instrumentation,
-                                           layer_id));
-}
-
-CachingBitmapContentLayerUpdater::CachingBitmapContentLayerUpdater(
-    scoped_ptr<LayerPainter> painter,
-    RenderingStatsInstrumentation* stats_instrumentation,
-    int layer_id)
-    : BitmapContentLayerUpdater(painter.Pass(),
-                                stats_instrumentation,
-                                layer_id),
-      pixels_did_change_(false) {}
-
-CachingBitmapContentLayerUpdater::~CachingBitmapContentLayerUpdater() {}
-
-void CachingBitmapContentLayerUpdater::PrepareToUpdate(
-    gfx::Rect content_rect,
-    gfx::Size tile_size,
-    float contents_width_scale,
-    float contents_height_scale,
-    gfx::Rect* resulting_opaque_rect) {
-  BitmapContentLayerUpdater::PrepareToUpdate(content_rect,
-                                             tile_size,
-                                             contents_width_scale,
-                                             contents_height_scale,
-                                             resulting_opaque_rect);
-
-  const SkBitmap& new_bitmap = canvas_->getDevice()->accessBitmap(false);
-  SkAutoLockPixels lock(new_bitmap);
-  DCHECK_GT(new_bitmap.bytesPerPixel(), 0);
-  pixels_did_change_ = new_bitmap.config() != cached_bitmap_.config() ||
-                       new_bitmap.height() != cached_bitmap_.height() ||
-                       new_bitmap.width() != cached_bitmap_.width() ||
-                       memcmp(new_bitmap.getPixels(),
-                              cached_bitmap_.getPixels(),
-                              new_bitmap.getSafeSize());
-
-  if (pixels_did_change_)
-    new_bitmap.deepCopyTo(&cached_bitmap_, new_bitmap.config());
-}
-
-}  // namespace cc

cc/resources/caching_bitmap_content_layer_updater.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_RESOURCES_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
-#define CC_RESOURCES_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_
-
-#include "base/compiler_specific.h"
-#include "cc/resources/bitmap_content_layer_updater.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace cc {
-
-class CachingBitmapContentLayerUpdater : public BitmapContentLayerUpdater {
- public:
-  static scoped_refptr<CachingBitmapContentLayerUpdater> Create(
-      scoped_ptr<LayerPainter>,
-      RenderingStatsInstrumentation* stats_instrumentation,
-      int layer_id);
-
-  virtual void PrepareToUpdate(gfx::Rect content_rect,
-                               gfx::Size tile_size,
-                               float contents_width_scale,
-                               float contents_height_scale,
-                               gfx::Rect* resulting_opaque_rect) OVERRIDE;
-
-  bool pixels_did_change() const {
-    return pixels_did_change_;
-  }
-
- private:
-  CachingBitmapContentLayerUpdater(
-      scoped_ptr<LayerPainter> painter,
-      RenderingStatsInstrumentation* stats_instrumentation,
-      int layer_id);
-  virtual ~CachingBitmapContentLayerUpdater();
-
-  bool pixels_did_change_;
-  SkBitmap cached_bitmap_;
-
-  DISALLOW_COPY_AND_ASSIGN(CachingBitmapContentLayerUpdater);
-};
-
-}  // namespace cc
-
-#endif  // CC_RESOURCES_CACHING_BITMAP_CONTENT_LAYER_UPDATER_H_