Bug 527201 - Remove the hack to skip bogus MathML _moz-* attributes in the HTML5 test suite. r=hsivonen
Bug 911482 - Perform audio downmix inside AudioStream class. r=rillian
Bug 943519 - Handle errors returned from calls to Perform. r=hsivonen
Bug 943519 - Use moz_malloc/free/realloc instead of nsMemory::Alloc/Free/Realloc (fallible allocations) in nsTextFragment::Append. r=hsivonen
Bug 947856 - Mute the background content audio channel when playing any foreground normal video channel. r=mchen