Implement parsing of vbv buffering info in RTSP.
Implement parsing of vbv buffering info in RTSP.

Change-Id: I7d871cafda2c4c65670a40ad9ab4f24317f8568a
related-to-bug: 3351915

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base