Bug 937152 - Remove XPCWrappedJS::mMainThread and mMainThreadOnly. r=bholley
Bug 950909 - Remove XPCWrappedJS hack from Codegen.py on branch. r=bz (over email)
Bug 950909 - Forward native aggregation to the root XPCWrappedJS. r=mccr8,sr=smaug a=RyanVM