jingle: Update the calls from RunAllPending() to RunUntilIdle().

jingle/notifier/listener/xmpp_push_client_unittest.cc

Index: jingle/notifier/listener/xmpp_push_client_unittest.cc
diff --git a/jingle/notifier/listener/xmpp_push_client_unittest.cc b/jingle/notifier/listener/xmpp_push_client_unittest.cc
index c4d53deec0fbf01e8a08be9cb688d7878ea696a0..8d4c66919be407182e57ca001ee49ff44c20d956 100644
--- a/jingle/notifier/listener/xmpp_push_client_unittest.cc
+++ b/jingle/notifier/listener/xmpp_push_client_unittest.cc
@@ -47,7 +47,7 @@ class XmppPushClientTest : public testing::Test {
 
   virtual void TearDown() OVERRIDE {
     // Clear out any messages posted by XmppPushClient.
-    message_loop_.RunAllPending();
+    message_loop_.RunUntilIdle();
     xmpp_push_client_->RemoveObserver(&mock_observer_);
     xmpp_push_client_.reset();
   }