Reland 15721002: Hook up the device selection to the WebAudio live audio

media/audio/pulse/pulse_unified.cc

Index: media/audio/pulse/pulse_unified.cc
diff --git a/media/audio/pulse/pulse_unified.cc b/media/audio/pulse/pulse_unified.cc
index 87bb6ae0a18cb191298d01d88b5f52bc3b610906..ee143416038ed24afd218c82435e4f2f662d8d02 100644
--- a/media/audio/pulse/pulse_unified.cc
+++ b/media/audio/pulse/pulse_unified.cc
@@ -41,9 +41,12 @@ void PulseAudioUnifiedStream::ReadCallback(pa_stream* handle, size_t length,
   static_cast<PulseAudioUnifiedStream*>(user_data)->ReadData();
 }
 
-PulseAudioUnifiedStream::PulseAudioUnifiedStream(const AudioParameters& params,
-                                                 AudioManagerBase* manager)
+PulseAudioUnifiedStream::PulseAudioUnifiedStream(
+    const AudioParameters& params,
+    const std::string& input_device_id,
+    AudioManagerBase* manager)
     : params_(params),
+      input_device_id_(input_device_id),
       manager_(manager),
       pa_context_(NULL),
       pa_mainloop_(NULL),
@@ -77,9 +80,8 @@ bool PulseAudioUnifiedStream::Open() {
                                  params_, &StreamNotifyCallback, NULL, this))
     return false;
 
-  // TODO(xians): Add support for non-default device.
   if (!pulse::CreateInputStream(pa_mainloop_, pa_context_, &input_stream_,
-                                params_, AudioManagerBase::kDefaultDeviceId,
+                                params_, input_device_id_,
                                 &StreamNotifyCallback, this))
     return false;