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

content/child/child_thread.cc

Index: content/child/child_thread.cc
diff --git a/content/child/child_thread.cc b/content/child/child_thread.cc
index 08d14b621bff177c2c9624f3962fcaad71132667..a0981d949573bb1da0390308064379de124dfb93 100644
--- a/content/child/child_thread.cc
+++ b/content/child/child_thread.cc
@@ -116,8 +116,8 @@ void ChildThread::Init() {
 
   sync_message_filter_ =
       new IPC::SyncMessageFilter(ChildProcess::current()->GetShutDownEvent());
-  thread_safe_sender_ = new ThreadSafeSender(base::MessageLoopProxy::current(),
-                                             sync_message_filter_.get());
+  thread_safe_sender_ = new ThreadSafeSender(
+      base::MessageLoopProxy::current().get(), sync_message_filter_.get());
   histogram_message_filter_ = new ChildHistogramMessageFilter();
   resource_message_filter_ =
       new ChildResourceMessageFilter(resource_dispatcher());