Move enum MenuAnchorPosition to reduce deps on menu_item_view.h

chrome/browser/ui/views/download/download_shelf_context_menu_view.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/views/download/download_shelf_context_menu_view.h"
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/page_navigator.h"
 #include "ui/gfx/point.h"
-#include "ui/views/controls/menu/menu_item_view.h"
 #include "ui/views/controls/menu/menu_runner.h"
 
 DownloadShelfContextMenuView::DownloadShelfContextMenuView(
     content::DownloadItem* download_item,
     content::PageNavigator* navigator)
     : DownloadShelfContextMenu(download_item, navigator) {
 }
 
 DownloadShelfContextMenuView::~DownloadShelfContextMenuView() {}
 
 void DownloadShelfContextMenuView::Run(views::Widget* parent_widget,
                                        const gfx::Rect& rect,
                                        ui::MenuSourceType source_type) {
   ui::MenuModel* menu_model = GetMenuModel();
   // Run() should not be getting called if the DownloadItem was destroyed.
   DCHECK(menu_model);
 
   menu_runner_.reset(new views::MenuRunner(menu_model));
 
   // The menu's alignment is determined based on the UI layout.
-  views::MenuItemView::AnchorPosition position;
+  views::MenuAnchorPosition position;
   if (base::i18n::IsRTL())
-    position = views::MenuItemView::TOPRIGHT;
+    position = views::MENU_ANCHOR_TOPRIGHT;
   else
-    position = views::MenuItemView::TOPLEFT;
+    position = views::MENU_ANCHOR_TOPLEFT;
 
   // The return value of RunMenuAt indicates whether the MenuRunner was deleted
   // while running the menu, which indicates that the containing view may have
   // been deleted. We ignore the return value because our caller already assumes
   // that the view could be deleted by the time we return from here.
   if (menu_runner_->RunMenuAt(
           parent_widget,
           NULL,
           rect,
           position,
           source_type,
           views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU) ==
       views::MenuRunner::MENU_DELETED) {
     return;
   }
   close_time_ = base::TimeTicks::Now();
 }