Change to address default selection of menu item

ui/views/controls/menu/menu_runner.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_
 #define UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/views/controls/menu/menu_item_view.h"
@@ skipping 34 matching lines @@
     HAS_MNEMONICS = 1 << 0,
 
     // The menu is a nested context menu. For example, click a folder on the
     // bookmark bar, then right click an entry to get its context menu.
     IS_NESTED     = 1 << 1,
 
     // Used for showing a menu during a drop operation. This does NOT block the
     // caller, instead the delegate is notified when the menu closes via the
     // DropMenuClosed method.
     FOR_DROP      = 1 << 2,
+
+    // The menu is a context menu (not necessarily nested), for example right
+    // click on a link on a website in the browser.
+    CONTEXT_MENU  = 1 << 3,
   };
 
   enum RunResult {
     // Indicates RunMenuAt is returning because the MenuRunner was deleted.
     MENU_DELETED,
 
     // Indicates RunMenuAt returned and MenuRunner was not deleted.
     NORMAL_EXIT
   };
 
@@ skipping 49 matching lines @@
 
  protected:
   DisplayChangeListener() {}
 };
 
 }
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_