Bug 890921 - 1/6: MobileMessage - Add deleteThreads() call to MobileMessageManager. Refactor RIL deleteMessage().
Bug 890921 - 2/6: Refactor test cases for delete().
Bug 890921 - 3/6: Interface changes.
Bug 890921 - 4/6: DOM & IPC changes.
Bug 890921 - 5/6: Backends.