Migrate callers of message_loop_proxy() to task_runner()

dbus/bus.cc

Index: dbus/bus.cc
diff --git a/dbus/bus.cc b/dbus/bus.cc
index 2f1300a25e3fc87f122014df9d3ef5c4f9016281..388911a62112679ab848807ae8dc75c80bb16f97 100644
--- a/dbus/bus.cc
+++ b/dbus/bus.cc
@@ -201,7 +201,7 @@ Bus::Bus(const Options& options)
   // The origin message loop is unnecessary if the client uses synchronous
   // functions only.
   if (base::MessageLoop::current())
-    origin_task_runner_ = base::MessageLoop::current()->message_loop_proxy();
+    origin_task_runner_ = base::MessageLoop::current()->task_runner();
 }
 
 Bus::~Bus() {