Bug 864485 - 1/N: B2G Telephony - move to IPDL. Rename nsITelephonyProvider to nsITelephonyService.
Bug 864485 - WebTelephony IPDL. Interface changes.
Bug 864485 - 2/4: DOM & IPC.
Bug 864485 - WebTelephony IPDL. (WIP)
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