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

skia/ext/vector_canvas.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/vector_canvas.h"
 
 #include "base/logging.h"
 #include "skia/ext/vector_device.h"
 
-namespace gfx {
+namespace skia {
 
 VectorCanvas::VectorCanvas() {
 }
 
 VectorCanvas::VectorCanvas(HDC dc, int width, int height) {
   bool initialized = initialize(dc, width, height);
   CHECK(initialized);
 }
 
 VectorCanvas::~VectorCanvas() {
@@ skipping 58 matching lines @@
   DCHECK(shared_section);
   PlatformDeviceWin* device = VectorDevice::create(
       reinterpret_cast<HDC>(shared_section), width, height);
   return device;
 }
 
 bool VectorCanvas::IsTopDeviceVectorial() const {
   return getTopPlatformDevice().IsVectorial();
 }
 
-}  // namespace gfx
+}  // namespace skia