Bug 856351 - Paris binding for DragEvent, r=peterv

--HG--
extra : rebase_source : 695b5a3bf3641f0e39d33ca8718e1bc78695b09d
Bug 861317 - nsChildView::WillPaint terribly inefficient when drawing to titlebar. r=bgirard
Bug 852315 - Use CheckPluginStopEvent for plugins when documents go inactive. r=bsmedberg