Merge 269819 "views: Terminate the nested message-loop correctly..."

Merge 269819 "views: Terminate the nested message-loop correctly..."

> views: Terminate the nested message-loop correctly when closing the menu.
> 
> It is possible for a non-menu source to start a nested message loop
> (e.g. for dragging a menu-item). So attempting to terminate the current
> iteration of the message-loop when the menu is closed can be problematic.
> So instead, terminate the message-loop through the DispatcherClient.
> 
> BUG=367850, 372208
> R=sky@chromium.org
> 
> Review URL: https://codereview.chromium.org/279073002

TBR=sadrul@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274104

[sadrul, 2014-06-01 03:00:26]

Committed patchset #1 manually as r274104 (tree was closed).