Enable built-in echo canceler if available.
Enable built-in echo canceler if available.

1. Always initialize AudioRecord with VOICE_COMMUNICATION.
2. If echo canceler is available, disable our echo suppressor.

Change-Id: Idf18d3833189a8478c1b252ebe6ce55e923280b3

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