Voice Messaging Intent API.

Removing EXTRA_SENDER_ACCOUNT_HASH, needs more work.

Bug 37747843

Test: make -j11 docs

Change-Id: I3046611510f85cf69ceff7c2274cda3b692581b9
(cherry picked from commit 2c4201448eb3c19f9b6d37c8b679f51362cff3a7)
4 files changed