Add CHECK to EnumerateDevices call in PepperDeviceManager

content/renderer/pepper/pepper_media_device_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/renderer/pepper/pepper_media_device_manager.h"
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
@@ skipping 63 matching lines @@
   DCHECK(open_callbacks_.empty());
 }
 
 void PepperMediaDeviceManager::EnumerateDevices(
     PP_DeviceType_Dev type,
     const GURL& document_url,
     const DevicesCallback& callback) {
 #if defined(ENABLE_WEBRTC)
   bool request_audio_input = type == PP_DEVICETYPE_DEV_AUDIOCAPTURE;
   bool request_video_input = type == PP_DEVICETYPE_DEV_VIDEOCAPTURE;
+  CHECK(request_audio_input || request_video_input);
   GetMediaDevicesDispatcher()->EnumerateDevices(
       request_audio_input, request_video_input, false /* audio_output */,
       url::Origin(document_url.GetOrigin()),
       base::Bind(&PepperMediaDeviceManager::DevicesEnumerated, AsWeakPtr(),
                  callback, ToMediaDeviceType(type)));
 #else
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&PepperMediaDeviceManager::DevicesEnumerated, AsWeakPtr(),
                  callback, ToMediaDeviceType(type), MediaDeviceInfoArray()));
@@ skipping 171 matching lines @@
   }
 
   return media_devices_dispatcher_;
 }
 
 void PepperMediaDeviceManager::OnDestruct() {
   delete this;
 }
 
 }  // namespace content