[Buildfix] Fix enable_webrtc=false build.

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 71 matching lines @@
   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()));
+      FROM_HERE, base::Bind(&PepperMediaDeviceManager::DevicesEnumerated,
+                            AsWeakPtr(), callback, ToMediaDeviceType(type),
+                            std::vector<MediaDeviceInfoArray>()));
 #endif
 }
 
 uint32_t PepperMediaDeviceManager::StartMonitoringDevices(
     PP_DeviceType_Dev type,
     const GURL& document_url,
     const DevicesCallback& callback) {
 #if defined(ENABLE_WEBRTC)
   base::WeakPtr<MediaDevicesEventDispatcher> event_dispatcher =
       MediaDevicesEventDispatcher::GetForRenderFrame(render_frame());
@@ skipping 161 matching lines @@
   }
 
   return media_devices_dispatcher_;
 }
 
 void PepperMediaDeviceManager::OnDestruct() {
   delete this;
 }
 
 }  // namespace content