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

skia/ext/platform_device_mac.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_mac.h"
 
 #include "base/logging.h"
 #include "skia/ext/skia_utils_mac.h"
 #include "SkMatrix.h"
 #include "SkPath.h"
 #include "SkUtils.h"
 
-namespace gfx {
+namespace skia {
+
+// TODO(brettw) remove this when the gfx namespaces are all removed.
+using namespace gfx;
 
 namespace {
 
 // Constrains position and size to fit within available_size.
 bool constrain(int available_size, int* position, int *size) {
   if (*position < 0) {
     *size += *position;
     *position = 0;
   }
   if (*size > 0 && *position < available_size) {
@@ skipping 126 matching lines @@
     // Clip. Note that windows clipping regions are not affected by the
     // transform so apply it manually.
     path.transform(transformation);
     // TODO(playmobil): Implement.
     NOTREACHED();
     // LoadPathToDC(context, path);
     // hrgn = PathToRegion(context);
   }
 }
 
-}  // namespace gfx
+}  // namespace skia