Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

webkit/support/simple_appcache_system.cc

Index: webkit/support/simple_appcache_system.cc
diff --git a/webkit/support/simple_appcache_system.cc b/webkit/support/simple_appcache_system.cc
index bf87be92d804201ec2fc95d2ce4567bd476de7ad..145ccebd8261a609a450a731634e7c5c1733d107 100644
--- a/webkit/support/simple_appcache_system.cc
+++ b/webkit/support/simple_appcache_system.cc
@@ -410,8 +410,8 @@ void SimpleAppCacheSystem::InitOnIOThread(
   service_ = new appcache::AppCacheService(NULL);
   backend_impl_ = new appcache::AppCacheBackendImpl();
   service_->Initialize(cache_directory_,
-                       db_thread_.message_loop_proxy(),
-                       SimpleResourceLoaderBridge::GetCacheThread());
+                       db_thread_.message_loop_proxy().get(),
+                       SimpleResourceLoaderBridge::GetCacheThread().get());
   service_->set_request_context(request_context);
   backend_impl_->Initialize(service_, frontend_proxy_.get(), kSingleProcessId);