bug 857061 - scale Windows taskbar preview properly for hi-dpi configuration. r=jimm
bug 860578 - fix missing favicons in Panorama view. r=dao
Bug 868990 part 2 - Remove ScriptFrameIter and rename StackIter to ScriptFrameIter. r=luke

--HG--
extra : rebase_source : b344fae9d8f62e045bac61a4481cf80c32bd38d1