Resubmit: Open the WrenchMenu on mouseover when dragging a browser action

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 "base/memory/scoped_ptr.h"
@@ skipping 64 matching lines @@
     // 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,
 
     // The menu should behave like a Windows native Combobox dropdow menu.
     // This behavior includes accepting the pending item and closing on F4.
     COMBOBOX  = 1 << 4,
+
+    // A child view is performing a drag-and-drop operation, so the menu should
+    // stay open (even if it doesn't receive drag updated events). In this case,
+    // the caller is responsible for closing the menu upon completion of the
+    // drag-and-drop.
+    NESTED_DRAG = 1 << 5,
   };
 
   enum RunResult {
     // Indicates RunMenuAt is returning because the MenuRunner was deleted.
     MENU_DELETED,
 
     // Indicates RunMenuAt returned and MenuRunner was not deleted.
     NORMAL_EXIT
   };
 
@@ skipping 60 matching lines @@
 
  protected:
   DisplayChangeListener() {}
 };
 
 }  // namespace internal
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_MENU_RUNNER_H_