Move the "platform" wrappers in skia/ext to the skia namespace.

skia/ext/bitmap_platform_device_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 SKIA_BITMAP_PLATFORM_DEVICE_WIN_H_
 #define SKIA_BITMAP_PLATFORM_DEVICE_WIN_H_
 
 #include "base/ref_counted.h"
 #include "skia/ext/platform_device_win.h"
 
-namespace gfx {
+namespace skia {
 
 // A device is basically a wrapper around SkBitmap that provides a surface for
 // SkCanvas to draw into. Our device provides a surface Windows can also write
 // to. BitmapPlatformDeviceWin creates a bitmap using CreateDIBSection() in a
 // format that Skia supports and can then use this to draw ClearType into, etc.
 // This pixel data is provided to the bitmap that the device contains so that it
 // can be shared.
 //
 // The device owns the pixel data, when the device goes away, the pixel data
 // also becomes invalid. THIS IS DIFFERENT THAN NORMAL SKIA which uses
@@ skipping 76 matching lines @@
   template<adjustAlpha adjustor>
   void processPixels(int x,
                      int y,
                      int width,
                      int height);
 
   // Data associated with this device, guaranteed non-null.
   scoped_refptr<BitmapPlatformDeviceWinData> data_;
 };
 
-}  // namespace gfx
+}  // namespace skia
 
 #endif  // SKIA_BITMAP_PLATFORM_DEVICE_WIN_H_