Enable SetInitialPlayoutDelay on Android.

Background:
In Chrome mirroring which uses 500ms buffering mode,
audio video mismatch happens in the begining because of the lack of the api.

BUG=b/10538425
TEST=pass 'git try' except tests which is aleady broken in the bot. pass 'build/android/test_runner.py gtest -s modules_tests --verbose --release  -f *InitialPlayoutDelayTest*'
R=henrika@webrtc.org, turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2177004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4807 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed