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

content/renderer/media/webaudio_capturer_source.cc

Index: content/renderer/media/webaudio_capturer_source.cc
diff --git a/content/renderer/media/webaudio_capturer_source.cc b/content/renderer/media/webaudio_capturer_source.cc
index bf12b5aa90c4a0acbcc675b2787201e74ddb02c9..ea71dd2fb9d1d44fc9ee19f4e6a8901d14acdb7b 100644
--- a/content/renderer/media/webaudio_capturer_source.cc
+++ b/content/renderer/media/webaudio_capturer_source.cc
@@ -47,7 +47,7 @@ void WebAudioCapturerSource::setFormat(
 void WebAudioCapturerSource::Initialize(
     const media::AudioParameters& params,
     media::AudioCapturerSource::CaptureCallback* callback,
-    media::AudioCapturerSource::CaptureEventHandler* event_handler) {
+    int session_id) {
   // The downstream client should be configured the same as what WebKit
   // is feeding it.
   DCHECK_EQ(set_format_channels_, params.channels());