Do not pass the string device_id via IPC message to create an audio input stream

content/renderer/media/media_stream_dependency_factory.cc

Index: content/renderer/media/media_stream_dependency_factory.cc
diff --git a/content/renderer/media/media_stream_dependency_factory.cc b/content/renderer/media/media_stream_dependency_factory.cc
index c6df648a4846dd93b582fb366dca1161f471d001..ba38461e590b599dcd591cd8783648512aa7280a 100644
--- a/content/renderer/media/media_stream_dependency_factory.cc
+++ b/content/renderer/media/media_stream_dependency_factory.cc
@@ -462,7 +462,11 @@ MediaStreamDependencyFactory::CreateLocalVideoSource(
 bool MediaStreamDependencyFactory::InitializeAudioSource(
   const StreamDeviceInfo& device_info) {
   DVLOG(1) << "MediaStreamDependencyFactory::InitializeAudioSource()";
-  const MediaStreamDevice device = device_info.device;
+
+  // TODO(henrika): the current design does not support a unique source
+  // for each audio track.
+  if (device_info.session_id <= 0)
+    return false;
 
   // Initialize the source using audio parameters for the selected
   // capture device.
@@ -470,18 +474,10 @@ bool MediaStreamDependencyFactory::InitializeAudioSource(
   // TODO(henrika): refactor \content\public\common\media_stream_request.h
   // to allow dependency of media::ChannelLayout and avoid static_cast.
   if (!capturer->Initialize(
-          static_cast<media::ChannelLayout>(device.channel_layout),
-          device.sample_rate))
-    return false;
-
-  // Specify which capture device to use. The acquired session id is used
-  // for identification.
-  // TODO(henrika): the current design does not support a uniqe source
-  // for each audio track.
-  if (device_info.session_id <= 0)
+          static_cast<media::ChannelLayout>(device_info.device.channel_layout),
+          device_info.device.sample_rate, device_info.session_id))
     return false;
 
-  capturer->SetDevice(device_info.session_id);
   return true;
 }