Removal of dependencies on PlatformDevice classes.

skia/ext/platform_canvas_mac.cc

 // Copyright (c) 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.
 
 #include "skia/ext/platform_canvas.h"
 
-#include "skia/ext/bitmap_platform_device_mac.h"
+#include "skia/ext/bitmap_platform_device.h"
 #include "third_party/skia/include/core/SkTypes.h"
 
 namespace skia {
 
 PlatformCanvas::PlatformCanvas(int width, int height, bool is_opaque) {
   setDeviceFactory(SkNEW(BitmapPlatformDeviceFactory))->unref();
   initialize(width, height, is_opaque);
 }
 
 PlatformCanvas::PlatformCanvas(int width,
@@ skipping 24 matching lines @@
 }
 
 bool PlatformCanvas::initialize(CGContextRef context,
                                 int width,
                                 int height,
                                 bool is_opaque) {
   return initializeWithDevice(BitmapPlatformDevice::Create(
       context, width, height, is_opaque));
 }
 
-CGContextRef PlatformCanvas::beginPlatformPaint() const {
-  return getTopPlatformDevice().BeginPlatformPaint();
-}
-
-void PlatformCanvas::endPlatformPaint() const {
-  getTopPlatformDevice().EndPlatformPaint();
-}
-
 }  // namespace skia