Revert of Add groupid for media devices. Group audio devices.

content/browser/renderer_host/media/audio_input_device_manager.cc

Index: content/browser/renderer_host/media/audio_input_device_manager.cc
diff --git a/content/browser/renderer_host/media/audio_input_device_manager.cc b/content/browser/renderer_host/media/audio_input_device_manager.cc
index 6a6047c3607c7d69e961253e80be765b5418c81e..ffdfe2aa9ff19281dd779c621d34cbee794fa589 100644
--- a/content/browser/renderer_host/media/audio_input_device_manager.cc
+++ b/content/browser/renderer_host/media/audio_input_device_manager.cc
@@ -179,10 +179,6 @@
     // Add device information to device vector.
     devices->push_back(StreamDeviceInfo(
         stream_type, it->device_name, it->unique_id));
-  }
-  for (StreamDeviceInfo& device_info : *devices) {
-    device_info.device.group_id =
-        audio_manager_->GetGroupIDInput(device_info.device.id);
   }
 
   // Return the device list through the listener by posting a task on