Enable platform echo cancellation through the AudioRecord path.

media/audio/android/audio_record_input.cc

Index: media/audio/android/audio_record_input.cc
diff --git a/media/audio/android/audio_record_input.cc b/media/audio/android/audio_record_input.cc
index 51c436f53c7313a0db13f74604e2c7128b7df487..7df97100aa85c0268bb5f6433d9fca4dd3270a66 100644
--- a/media/audio/android/audio_record_input.cc
+++ b/media/audio/android/audio_record_input.cc
@@ -24,7 +24,8 @@ AudioRecordInputStream::AudioRecordInputStream(
           params.sample_rate(),
           params.channels(),
           params.bits_per_sample(),
-          params.GetBytesPerBuffer()));
+          params.GetBytesPerBuffer(),
+          params.effects().echo_canceller));
 }
 
 AudioRecordInputStream::~AudioRecordInputStream() {