remoting: Update calls froms RunAllPending() to RunUntilIdle().

remoting/host/register_support_host_request_unittest.cc

Index: remoting/host/register_support_host_request_unittest.cc
diff --git a/remoting/host/register_support_host_request_unittest.cc b/remoting/host/register_support_host_request_unittest.cc
index 4f091b8d9ece2e42ac469c1826d109be16751654..0eb1c5f61405a20674082481ff3bf67ff21cf29c 100644
--- a/remoting/host/register_support_host_request_unittest.cc
+++ b/remoting/host/register_support_host_request_unittest.cc
@@ -90,7 +90,7 @@ TEST_F(RegisterSupportHostRequestTest, Send) {
       .WillOnce(DoAll(SaveArg<0>(&sent_iq), Return(true)));
 
   request->OnSignalStrategyStateChange(SignalStrategy::CONNECTED);
-  message_loop_.RunAllPending();
+  message_loop_.RunUntilIdle();
 
   // Verify format of the query.
   scoped_ptr<XmlElement> stanza(sent_iq);
@@ -155,7 +155,7 @@ TEST_F(RegisterSupportHostRequestTest, Send) {
   }
   EXPECT_EQ(1, consumed);
 
-  message_loop_.RunAllPending();
+  message_loop_.RunUntilIdle();
 }
 
 }  // namespace remoting