Bug 834999 - followup to remove useless dump() r=me a=tef+
Bug 836774 - Prevent objects/strings from flowing to an MToDouble, r=jandem.
Merge m-c to inbound.
Bug 821695 - Do not load videocontrols.xml if the audio/video tag does not need it. r=roc
Bug 827158 - Part 4: Traverse the mValidity member of HTMLObjectElement as well