Enable platform echo cancellation through the AudioRecord path.

content/common/media/media_param_traits.cc

Index: content/common/media/media_param_traits.cc
diff --git a/content/common/media/media_param_traits.cc b/content/common/media/media_param_traits.cc
index f6eaec1a85ffccb0eda2a822bb6ab2921d6c417f..3ec6a25994caa76b66305afe08d45d8c85403f46 100644
--- a/content/common/media/media_param_traits.cc
+++ b/content/common/media/media_param_traits.cc
@@ -25,13 +25,14 @@ void ParamTraits<AudioParameters>::Write(Message* m,
   m->WriteInt(p.frames_per_buffer());
   m->WriteInt(p.channels());
   m->WriteInt(p.input_channels());
+  m->WriteInt(p.effects());
 }
 
 bool ParamTraits<AudioParameters>::Read(const Message* m,
                                         PickleIterator* iter,
                                         AudioParameters* r) {
   int format, channel_layout, sample_rate, bits_per_sample,
-      frames_per_buffer, channels, input_channels;
+      frames_per_buffer, channels, input_channels, effects;
 
   if (!m->ReadInt(iter, &format) ||
       !m->ReadInt(iter, &channel_layout) ||
@@ -39,11 +40,14 @@ bool ParamTraits<AudioParameters>::Read(const Message* m,
       !m->ReadInt(iter, &bits_per_sample) ||
       !m->ReadInt(iter, &frames_per_buffer) ||
       !m->ReadInt(iter, &channels) ||
-      !m->ReadInt(iter, &input_channels))
+      !m->ReadInt(iter, &input_channels) ||
+      !m->ReadInt(iter, &effects))
     return false;
-  r->Reset(static_cast<AudioParameters::Format>(format),
-           static_cast<ChannelLayout>(channel_layout), channels,
-           input_channels, sample_rate, bits_per_sample, frames_per_buffer);
+  AudioParameters params(static_cast<AudioParameters::Format>(format),
+         static_cast<ChannelLayout>(channel_layout), channels,
+         input_channels, sample_rate, bits_per_sample, frames_per_buffer,
+         effects);
+  *r = params;
   if (!r->IsValid())
     return false;
   return true;