[Buildfix] Fix enable_webrtc=false build.

content/renderer/pepper/pepper_media_device_manager.cc

Index: content/renderer/pepper/pepper_media_device_manager.cc
diff --git a/content/renderer/pepper/pepper_media_device_manager.cc b/content/renderer/pepper/pepper_media_device_manager.cc
index 412c53f1be6e30a9c0875d75d994304942cbad9d..5da6cb4eb7f55a6c1efe1679737597bbbe72279e 100644
--- a/content/renderer/pepper/pepper_media_device_manager.cc
+++ b/content/renderer/pepper/pepper_media_device_manager.cc
@@ -89,9 +89,9 @@ void PepperMediaDeviceManager::EnumerateDevices(
                  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
 }