Migrate callers of message_loop_proxy() to task_runner()

jingle/notifier/base/xmpp_connection_unittest.cc

Index: jingle/notifier/base/xmpp_connection_unittest.cc
diff --git a/jingle/notifier/base/xmpp_connection_unittest.cc b/jingle/notifier/base/xmpp_connection_unittest.cc
index 147edac22ac2c520e6b2048e08454b28bf09a56d..2e3eb59cdc51e4f48f1086cf10070d7317208a18 100644
--- a/jingle/notifier/base/xmpp_connection_unittest.cc
+++ b/jingle/notifier/base/xmpp_connection_unittest.cc
@@ -80,7 +80,7 @@ class XmppConnectionTest : public testing::Test {
     message_loop_.reset(new base::MessageLoop(pump.Pass()));
 
     url_request_context_getter_ = new net::TestURLRequestContextGetter(
-        message_loop_->message_loop_proxy());
+        message_loop_->task_runner());
   }
 
   ~XmppConnectionTest() override {}