[cc] Unify static create method of ResourceUpdate

cc/resources/resource_update.cc

Index: cc/resources/resource_update.cc
diff --git a/cc/resources/resource_update.cc b/cc/resources/resource_update.cc
index 5760ddf4a0dde663b3fdb6bb336d66638c1dc37d..ae25e46927c770b3419610082cd3a9eac1910503 100644
--- a/cc/resources/resource_update.cc
+++ b/cc/resources/resource_update.cc
@@ -1,4 +1,4 @@
-// Copyright 2012 The Chromium Authors. All rights reserved.
+// Copyright 2014 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.
 
@@ -25,23 +25,6 @@ ResourceUpdate ResourceUpdate::Create(PrioritizedResource* texture,
   return update;
 }
 
-ResourceUpdate ResourceUpdate::CreateFromCanvas(
-    PrioritizedResource* resource,
-    const skia::RefPtr<SkCanvas>& canvas,
-    gfx::Rect content_rect,
-    gfx::Rect source_rect,
-    gfx::Vector2d dest_offset) {
-  CHECK(content_rect.Contains(source_rect));
-  ResourceUpdate update;
-  update.texture = resource;
-  update.canvas = canvas;
-  update.bitmap = &canvas->getDevice()->accessBitmap(false);
-  update.content_rect = content_rect;
-  update.source_rect = source_rect;
-  update.dest_offset = dest_offset;
-  return update;
-}
-
 ResourceUpdate::ResourceUpdate()
     : texture(NULL),
       bitmap(NULL) {}