Use proper namespace in skia/ext

skia/ext/skia_utils_ios.mm

 // Copyright 2012 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/skia_utils_ios.h"
 
 #import <ImageIO/ImageIO.h>
 #import <UIKit/UIKit.h>
 
 #include "base/ios/ios_util.h"
 #include "base/logging.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/macros.h"
 #include "third_party/skia/include/utils/mac/SkCGUtils.h"
 
 namespace {
 
 const uint8 kICOHeaderMagic[4] = {0x00, 0x00, 0x01, 0x00};
 
 // Returns whether the data encodes an ico image.
 bool EncodesIcoImage(NSData* image_data) {
   if (image_data.length < arraysize(kICOHeaderMagic))
     return false;
   return memcmp(kICOHeaderMagic, image_data.bytes,
                 arraysize(kICOHeaderMagic)) == 0;
 }
 
 }  // namespace
 
-namespace gfx {
+namespace skia {
 
 SkBitmap CGImageToSkBitmap(CGImageRef image, CGSize size, bool is_opaque) {
   SkBitmap bitmap;
   if (!image)
     return bitmap;
 
   if (!bitmap.tryAllocN32Pixels(size.width, size.height, is_opaque))
     return bitmap;
 
   void* data = bitmap.getPixels();
@@ skipping 82 matching lines @@
   return frames;
 }
 
 UIColor* UIColorFromSkColor(SkColor color) {
   return [UIColor colorWithRed:SkColorGetR(color) / 255.0f
                          green:SkColorGetG(color) / 255.0f
                           blue:SkColorGetB(color) / 255.0f
                          alpha:SkColorGetA(color) / 255.0f];
 }
 
-}  // namespace gfx
+}  // namespace skia