Revert 136996 - ui: Move NativeTheme files into ui/base/native_theme/ directory.

ui/views/controls/menu/menu_separator_views.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/views/controls/menu/menu_separator.h"
 
 #include "third_party/skia/include/core/SkColor.h"
-#include "ui/base/native_theme/native_theme.h"
 #include "ui/gfx/canvas.h"
+#include "ui/gfx/native_theme.h"
 #include "ui/views/controls/menu/menu_config.h"
 
 namespace {
 
 const int kSeparatorHeight = 1;
 
 }  // namespace
 
 namespace views {
 
 void MenuSeparator::OnPaint(gfx::Canvas* canvas) {
   canvas->FillRect(gfx::Rect(0, height() / 2, width(), kSeparatorHeight),
-      ui::NativeTheme::instance()->GetSystemColor(
-          ui::NativeTheme::kColorId_MenuSeparatorColor));
+      gfx::NativeTheme::instance()->GetSystemColor(
+          gfx::NativeTheme::kColorId_MenuSeparatorColor));
 }
 
 gfx::Size MenuSeparator::GetPreferredSize() {
   return gfx::Size(10,  // Just in case we're the only item in a menu.
                    MenuConfig::instance().separator_height);
 }
 
 }  // namespace views