Bug 933054 - Allow the toJSON identifier to be used in WebIDL interfaces again. r=peterv

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extra : rebase_source : 83c7724f97d0b2ce709092f2aaf7e15e682c3d90
Bug 930241 - Use toJSON instead of jsonifier in the Contacts interfaces. r=gwagner

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extra : rebase_source : b19099dec587b7acc3a86e71928423b46b958e0e