Bug 854955 - GC: Rooting in XrayWrapper.cpp r=bholley

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extra : rebase_source : fdee7c16f54e1fcbf4ae96e89ffd20eb14ec2d8d
Bug 855668 - GC: Rooting in DictionaryHelpers.cpp r=smaug

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extra : rebase_source : c4a28ae779a4432e1a20bf77501088fa8e966b73