method when the load type is user click to find the preferred registered window for handling the content r=travis git-svn-id: svn://10.0.0.236/trunk@59758 18797224-902f-48f8-a5cc-f745e15eee43
method when the load type is user click to find the preferred registered window for handling the content r=travis git-svn-id: svn://10.0.0.236/trunk@59758 18797224-902f-48f8-a5cc-f745e15eee43