Move skia extensions from the port to skia/ext.

skia/ext/platform_canvas_win.h

 // Copyright (c) 2006-2008 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 PlatformCanvasWin_h
-#define PlatformCanvasWin_h
+#ifndef SKIA_EXT_PLATFORM_CANVAS_WIN_H_
+#define SKIA_EXT_PLATFORM_CANVAS_WIN_H_
 
 #include <windows.h>
 
-#include "PlatformDeviceWin.h"
 #include "base/basictypes.h"
+#include "skia/ext/platform_device_win.h"
 
 #include "SkCanvas.h"
 
 namespace gfx {
 
 // This class is a specialization of the regular SkCanvas that is designed to
 // work with a gfx::PlatformDevice to manage platform-specific drawing. It
 // allows using both Skia operations and platform-specific operations.
 class PlatformCanvasWin : public SkCanvas {
  public:
@@ skipping 169 matching lines @@
 
   // Disallow copy and assign.
   CanvasPaintT(const CanvasPaintT&);
   CanvasPaintT& operator=(const CanvasPaintT&);
 };
 
 typedef CanvasPaintT<PlatformCanvasWin> PlatformCanvasWinPaint;
 
 }  // namespace gfx
 
-#endif  // PlatformCanvasWin_h
+#endif  // SKIA_EXT_PLATFORM_CANVAS_WIN_H_