Wire up GetUserMedia in Chrome Frame.

media/audio/win/device_enumeration_win.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 <MMDeviceAPI.h>
 #include <mmsystem.h>
 #include <Functiondiscoverykeys_devpkey.h>  // MMDeviceAPI.h must come first
 
 #include "media/audio/win/audio_manager_win.h"
 
@@ skipping 15 matching lines @@
 
 bool GetInputDeviceNamesWin(AudioDeviceNames* device_names) {
   // It is assumed that this method is called from a COM thread, i.e.,
   // CoInitializeEx() is not called here again to avoid STA/MTA conflicts.
   ScopedComPtr<IMMDeviceEnumerator> enumerator;
   HRESULT hr =  CoCreateInstance(__uuidof(MMDeviceEnumerator),
                                  NULL,
                                  CLSCTX_INPROC_SERVER,
                                  __uuidof(IMMDeviceEnumerator),
                                  enumerator.ReceiveVoid());
+  DCHECK_NE(hr, CO_E_NOTINITIALIZED);
   if (FAILED(hr)) {
     LOG(WARNING) << "Failed to create IMMDeviceEnumerator: " << std::hex << hr;
     return false;
   }
 
   // Generate a collection of active audio capture endpoint devices.
   // This method will succeed even if all devices are disabled.
   ScopedComPtr<IMMDeviceCollection> collection;
   hr = enumerator->EnumAudioEndpoints(eCapture,
                                       DEVICE_STATE_ACTIVE,
@@ skipping 124 matching lines @@
 
     result = waveInGetDevCaps(i, &capabilities, sizeof(capabilities));
     if (result == MMSYSERR_NOERROR)
       return WideToUTF8(capabilities.szPname);
   }
 
   return std::string();
 }
 
 }  // namespace media