Windows/Linux: Fix positioning of select popups and dismissal on window move/resize by calling new CefBrowserHost::NotifyMoveOrResizeStarted() method from client applications (issue #1208).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk@1901 5089003a-bbd8-11dd-ad1f-f1f9622dbc98