Bug 882027. Make MediaDecoder::UpdateReadyStateForData always be responsible for calling GetNextFrameStatus when that value is passed to HTMLMediaElement::UpdateReadyStateForData, but keep calling GetNextFrameStatus on the state machine thread to suppress dispatching of redundant runnables when nothing has changed. r=cpearce
Bug 876092. Part 1. Don't let effects of MarkFramesForDisplayList carry over between pages. r=mats
Bug 876092. Copy the DisplayItemClip into OutOfFlowDisplayData instead of storing a pointer. r=mats
Bug 875060. Make display:-moz-stack/-moz-inline-stack elements which are overflow:hidden clip all their descendants, including those for which it is not the containing block. r=mats