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

skia/ext/bitmap_platform_device_linux.cc

 // 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.
 
 #include "skia/ext/bitmap_platform_device_linux.h"
 
 #include <cairo/cairo.h>
 
 #include "base/logging.h"
 
-namespace gfx {
+namespace skia {
 
 // -----------------------------------------------------------------------------
 // These objects are reference counted and own a Cairo surface. The surface is
 // the backing store for a Skia bitmap and we reference count it so that we can
 // copy BitmapPlatformDeviceLinux objects without having to copy all the image
 // data.
 // -----------------------------------------------------------------------------
 class BitmapPlatformDeviceLinux::BitmapPlatformDeviceLinuxData
     : public base::RefCounted<BitmapPlatformDeviceLinuxData> {
  public:
@@ skipping 62 matching lines @@
 cairo_surface_t* BitmapPlatformDeviceLinux::surface() const {
   return data_->surface();
 }
 
 BitmapPlatformDeviceLinux& BitmapPlatformDeviceLinux::operator=(
     const BitmapPlatformDeviceLinux& other) {
   data_ = other.data_;
   return *this;
 }
 
-}  // namespace gfx
+}  // namespace skia