Merge "Fix talkback. Announce Files appname by explicitly call...
Merge "Fix talkback. Announce Files appname by explicitly call View.announceForAccessibility. To prevent announcing twice, only do this when first launch." into rvc-dev am: 68392ec4 am: 5bd3f582
Change-Id: I363a0d723e9e9aa0decd2b1c299ad5b684bf814b