Migrate callers of message_loop_proxy() to task_runner()

sync/util/get_session_name_unittest.cc

Index: sync/util/get_session_name_unittest.cc
diff --git a/sync/util/get_session_name_unittest.cc b/sync/util/get_session_name_unittest.cc
index 724cd8b7f69c9a33a3c9d6e76a0bdc4b99dba62e..2a77d4a0875a9bf3dd339123fb33b20fbcbaeb47 100644
--- a/sync/util/get_session_name_unittest.cc
+++ b/sync/util/get_session_name_unittest.cc
@@ -64,7 +64,7 @@ TEST_F(GetSessionNameTest, GetSessionNameSynchronouslyChromebox) {
 // with a session name.  Makes sure the returned session name is equal
 // to the return value of GetSessionNameSynchronouslyForTesting().
 TEST_F(GetSessionNameTest, GetSessionName) {
-  GetSessionName(message_loop_.message_loop_proxy(),
+  GetSessionName(message_loop_.task_runner(),
                  base::Bind(&GetSessionNameTest::SetSessionNameAndQuit,
                             base::Unretained(this)));
   message_loop_.Run();