Bug 874105.  Make CallSetup hold a Rooted to the object it's constructed with so we don't have to worry about it going gray while things like argument conversion for the call are in progress.  r=mccr8
Bug 851514.  Make sure that we add the parent frame before its kids when constructing a scrollable block, so that things will appear in the right order in fixed-pos lists.  r=dbaron
Bug 873229.  Try harder to get a JSErrorReport out of exceptions.  r=bholley,waldo
Bug 874154.  Make sure we don't end up with uninitialized JSObject* or JS::Value in dictionaries.  r=ms2ger
Bug 857946 - [AccessFu] enabling accessible content after closing all tabs. Adding a per process Accessibility event observer. r=eeejay
Bug 872355 - Always use nested virtual cursors, when available. r=yzen