ui: Move NativeTheme files into ui/base/native_theme/ directory.

ui/base/native_theme/native_theme_base.h

 // Copyright (c) 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.
 
-#ifndef UI_GFX_NATIVE_THEME_BASE_H_
-#define UI_GFX_NATIVE_THEME_BASE_H_
+#ifndef UI_BASE_NATIVE_THEME_NATIVE_THEME_BASE_H_
+#define UI_BASE_NATIVE_THEME_NATIVE_THEME_BASE_H_
+#pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "skia/ext/platform_canvas.h"
-#include "ui/gfx/native_theme.h"
+#include "ui/base/native_theme/native_theme.h"
 
 namespace gfx {
 class Rect;
 class Size;
+}
+
+namespace ui {
 
 // Theme support for non-Windows toolkits.
 class NativeThemeBase : public NativeTheme {
  public:
   // NativeTheme implementation:
   virtual gfx::Size GetPartSize(Part part,
                                 State state,
                                 const ExtraParams& extra) const OVERRIDE;
   virtual void Paint(SkCanvas* canvas,
                      Part part,
@@ skipping 129 matching lines @@
                  SkScalar min,
                  SkScalar max) const;
   SkColor OutlineColor(SkScalar* hsv1, SkScalar* hsv2) const;
 
   unsigned int scrollbar_width_;
   unsigned int scrollbar_button_length_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeThemeBase);
 };
 
-}  // namespace gfx
+}  // namespace ui
 
-#endif  // UI_GFX_NATIVE_THEME_BASE_H_
+#endif  // UI_BASE_NATIVE_THEME_NATIVE_THEME_BASE_H_