Bug 956961 - FileDescriptorToFILE should always use its input. r=bent

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extra : amend_source : 60d5d0ca9a9dd57c66e7a250f6f8604820357131
Bug 956961 - Open content processes' DMD log files in the parent process. r=njn
Bug 956961 - Stop disabling sandboxing when DMD is enabled. r=kang

--HG--
extra : amend_source : 66f2453794e6a8a581e1564e786cfc8cac1f6bbd