Move enum MenuAnchorPosition to reduce deps on menu_item_view.h

ui/views/examples/menu_example.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/examples/menu_example.h"
 
 #include <set>
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/base/models/simple_menu_model.h"
@@ skipping 171 matching lines @@
     : MenuButton(NULL, test, this, true) {
 }
 
 ExampleMenuButton::~ExampleMenuButton() {
 }
 
 void ExampleMenuButton::OnMenuButtonClicked(View* source,
                                             const gfx::Point& point) {
   menu_runner_.reset(new MenuRunner(GetMenuModel()));
 
-  if (menu_runner_->RunMenuAt(source->GetWidget()->GetTopLevelWidget(), this,
-        gfx::Rect(point, gfx::Size()), MenuItemView::TOPRIGHT,
-        ui::MENU_SOURCE_NONE, MenuRunner::HAS_MNEMONICS) ==
-      MenuRunner::MENU_DELETED)
+  if (menu_runner_->RunMenuAt(source->GetWidget()->GetTopLevelWidget(),
+                              this,
+                              gfx::Rect(point, gfx::Size()),
+                              MENU_ANCHOR_TOPRIGHT,
+                              ui::MENU_SOURCE_NONE,
+                              MenuRunner::HAS_MNEMONICS) ==
+      MenuRunner::MENU_DELETED) {
     return;
+  }
 }
 
 ui::SimpleMenuModel* ExampleMenuButton::GetMenuModel() {
   if (!menu_model_.get())
     menu_model_.reset(new ExampleMenuModel);
   return menu_model_.get();
 }
 
 }  // namespace
 
 MenuExample::MenuExample() : ExampleBase("Menu") {
 }
 
 MenuExample::~MenuExample() {
 }
 
 void MenuExample::CreateExampleView(View* container) {
   // We add a button to open a menu.
   ExampleMenuButton* menu_button = new ExampleMenuButton(
       ASCIIToUTF16("Open a menu"));
   container->SetLayoutManager(new FillLayout);
   container->AddChildView(menu_button);
 }
 
 }  // namespace examples
 }  // namespace views