Move skia_utils into the skia namespace.

skia/ext/skia_utils.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/skia_utils.h"
 
 #include "SkGradientShader.h"
 
-namespace gfx {
+namespace skia {
 
 SkShader* CreateGradientShader(int start_point,
                                int end_point,
                                SkColor start_color,
                                SkColor end_color) {
   SkColor grad_colors[2] = { start_color, end_color};
   SkPoint grad_points[2];
   grad_points[0].set(SkIntToScalar(0), SkIntToScalar(start_point));
   grad_points[1].set(SkIntToScalar(0), SkIntToScalar(end_point));
 
   return SkGradientShader::CreateLinear(
       grad_points, grad_colors, NULL, 2, SkShader::kRepeat_TileMode);
 }
 
-}  // namespace gfx
+}  // namespace skia