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

skia/ext/bitmap_platform_device_mac.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_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_
 #define SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_
 
 #include "base/ref_counted.h"
 #include "skia/ext/platform_device_mac.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 CoreGraphics can also
 // write to. BitmapPlatformDeviceMac creates a bitmap using
 // CGCreateBitmapContext() in a format that Skia supports and can then use this
 // to draw text 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 56 matching lines @@
 
   // Flushes the CoreGraphics context so that the pixel data can be accessed
   // directly by Skia. Overridden from SkDevice, this is called when Skia
   // starts accessing pixel data.
   virtual void onAccessBitmap(SkBitmap*);
 
   // Data associated with this device, guaranteed non-null.
   scoped_refptr<BitmapPlatformDeviceMacData> data_;
 
   virtual void processPixels(int x, int y,
-                             int width, int height, 
+                             int width, int height,
                              adjustAlpha adjustor);
 };
 
-}  // namespace gfx
+}  // namespace skia
 
 #endif  // SKIA_EXT_BITMAP_PLATFORM_DEVICE_MAC_H_