Enable platform echo cancellation through the AudioRecord path.

media/audio/audio_parameters.cc

Index: media/audio/audio_parameters.cc
diff --git a/media/audio/audio_parameters.cc b/media/audio/audio_parameters.cc
index b7ea4870c23c2bf5f6b51c2bfbfaa5279c566ef1..131d1fb5c141135092ac1a1c3c54d5480d04198d 100644
--- a/media/audio/audio_parameters.cc
+++ b/media/audio/audio_parameters.cc
@@ -16,7 +16,8 @@ AudioParameters::AudioParameters()
       bits_per_sample_(0),
       frames_per_buffer_(0),
       channels_(0),
-      input_channels_(0) {
+      input_channels_(0),
+      use_platform_aec_(false) {
 }
 
 AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
@@ -28,7 +29,8 @@ AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
       bits_per_sample_(bits_per_sample),
       frames_per_buffer_(frames_per_buffer),
       channels_(ChannelLayoutToChannelCount(channel_layout)),
-      input_channels_(0) {
+      input_channels_(0),
+      use_platform_aec_(false) {
 }
 
 AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
@@ -41,7 +43,8 @@ AudioParameters::AudioParameters(Format format, ChannelLayout channel_layout,
       bits_per_sample_(bits_per_sample),
       frames_per_buffer_(frames_per_buffer),
       channels_(ChannelLayoutToChannelCount(channel_layout)),
-      input_channels_(input_channels) {
+      input_channels_(input_channels),
+      use_platform_aec_(false) {
 }
 
 void AudioParameters::Reset(Format format, ChannelLayout channel_layout,
@@ -60,6 +63,15 @@ void AudioParameters::Reset(Format format, ChannelLayout channel_layout,
   frames_per_buffer_ = frames_per_buffer;
 }
 
+void AudioParameters::Reset(Format format, ChannelLayout channel_layout,
+                            int channels, int input_channels,
+                            int sample_rate, int bits_per_sample,
+                            int frames_per_buffer, bool use_platform_aec) {
+  use_platform_aec_ = use_platform_aec;
+  Reset(format, channel_layout, channels, input_channels, sample_rate,
+        bits_per_sample, frames_per_buffer);
+}
+
 bool AudioParameters::IsValid() const {
   return (format_ >= AUDIO_PCM_LINEAR) &&
          (format_ < AUDIO_LAST_FORMAT) &&