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

content/browser/renderer_host/media/media_stream_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 645 matching lines @@
     return;
   }
 
   switch (request->type) {
     case MEDIA_OPEN_DEVICE:
       request->requester->DeviceOpened(label, devices->front());
       break;
     case MEDIA_GENERATE_STREAM: {
       // Partition the array of devices into audio vs video.
       StreamDeviceInfoArray audio_devices, video_devices;
-      for (StreamDeviceInfoArray::const_iterator device_it = devices->begin();
+      for (StreamDeviceInfoArray::iterator device_it = devices->begin();
            device_it != devices->end(); ++device_it) {
         if (IsAudioMediaType(device_it->device.type)) {
+          // Store the native audio parameters in the device struct.
+          const StreamDeviceInfo& info =
+              audio_input_device_manager_->GetOpenedDeviceInfoById(
+                  capture_session_id);
+          DCHECK_EQ(info.device.id, device_it->device.id);
+          device_it->device.sample_rate = info.device.sample_rate;
+          device_it->device.channel_layout = info.device.channel_layout;
           audio_devices.push_back(*device_it);
         } else if (IsVideoMediaType(device_it->device.type)) {
           video_devices.push_back(*device_it);
         } else {
           NOTREACHED();
         }
       }
 
       request->requester->StreamGenerated(label, audio_devices, video_devices);
       NotifyDevicesOpened(*request);
@@ skipping 399 matching lines @@
   }
 
   // Always do enumeration even though some enumeration is in progress,
   // because those enumeration commands could be sent before these devices
   // change.
   ++active_enumeration_ref_count_[stream_type];
   GetDeviceManager(stream_type)->EnumerateDevices(stream_type);
 }
 
 }  // namespace content