Bug 1038648: [Loop] ensure exposed objects are immutable to prevent abuse by others. r=dolske
Ensure that the debugger client doesn't try to call a callback, when one is not provided (bug 1042761). r=robcee

--HG--
extra : rebase_source : d24e3e9e115176e7d0f9fe7365cbbe00d28c4f8b
Bug 1035625 - Support 'resizable' in-content preference subdialogs. r=MattN
Merge fx-team to m-c a=merge