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

ui/views/controls/menu/menu_config_views.cc

Index: ui/views/controls/menu/menu_config_views.cc
diff --git a/ui/views/controls/menu/menu_config_views.cc b/ui/views/controls/menu/menu_config_views.cc
index 01422407e2e9f2632ca7bd2087d187109d0cd3da..b35a090ab03234b21facd2e65b06ffe3858f0176 100644
--- a/ui/views/controls/menu/menu_config_views.cc
+++ b/ui/views/controls/menu/menu_config_views.cc
@@ -8,15 +8,15 @@
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image.h"
-#include "ui/gfx/native_theme_aura.h"
+#include "ui/base/native_theme/native_theme_aura.h"
 
 namespace views {
 
 // static
 MenuConfig* MenuConfig::Create() {
   MenuConfig* config = new MenuConfig();
-  config->text_color = gfx::NativeTheme::instance()->GetSystemColor(
-      gfx::NativeTheme::kColorId_EnabledMenuItemForegroundColor);
+  config->text_color = ui::NativeTheme::instance()->GetSystemColor(
+      ui::NativeTheme::kColorId_EnabledMenuItemForegroundColor);
   config->submenu_horizontal_margin_size = 0;
   config->submenu_vertical_margin_size = 2;
   config->submenu_horizontal_inset = 1;