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

ui/base/native_theme/native_theme_gtk.cc

 // 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.
 
-#include "ui/gfx/native_theme_gtk.h"
+#include "ui/base/native_theme/native_theme_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "ui/gfx/skia_utils_gtk.h"
 
 namespace {
 
 const SkColor kInvalidColorIdColor = SkColorSetRGB(255, 0, 128);
 
 // Theme colors returned by GetSystemColor().
 
 // FocusableBorder:
 const SkColor kFocusedBorderColor = SkColorSetRGB(0x4D, 0x90, 0xFE);
 const SkColor kUnfocusedBorderColor = SkColorSetRGB(0xD9, 0xD9, 0xD9);
 
 // TextButton:
 const SkColor kTextButtonBackgroundColor = SkColorSetRGB(0xde, 0xde, 0xde);
 const SkColor kTextButtonEnabledColor = SkColorSetRGB(6, 45, 117);
 const SkColor kTextButtonDisabledColor = SkColorSetRGB(161, 161, 146);
 const SkColor kTextButtonHighlightColor = SkColorSetARGB(200, 255, 255, 255);
 const SkColor kTextButtonHoverColor = kTextButtonEnabledColor;
 
 }  // namespace
 
-namespace gfx {
+namespace ui {
 
 // static
 const NativeTheme* NativeTheme::instance() {
   return NativeThemeGtk::instance();
 }
 
 // static
 const NativeThemeGtk* NativeThemeGtk::instance() {
   CR_DEFINE_STATIC_LOCAL(NativeThemeGtk, s_native_theme, ());
   return &s_native_theme;
@@ skipping 34 matching lines @@
   }
   return kInvalidColorIdColor;
 }
 
 NativeThemeGtk::NativeThemeGtk() {
 }
 
 NativeThemeGtk::~NativeThemeGtk() {
 }
 
-}  // namespace gfx
+}  // namespace ui