Fixed GMock warning about unexpected call in remoting_unittests.

remoting/jingle_glue/jingle_channel_unittest.cc

Index: remoting/jingle_glue/jingle_channel_unittest.cc
diff --git a/remoting/jingle_glue/jingle_channel_unittest.cc b/remoting/jingle_glue/jingle_channel_unittest.cc
index 140f6daba7f863c2eaaba9d7a3b58da8e955a4cf..94bb137ca1649de217d46fec97c6e4ca03f24dfd 100644
--- a/remoting/jingle_glue/jingle_channel_unittest.cc
+++ b/remoting/jingle_glue/jingle_channel_unittest.cc
@@ -138,6 +138,10 @@ TEST(JingleChannelTest, Close) {
   channel->thread_ = &thread;
   channel->stream_.reset(stream);
   channel->state_ = JingleChannel::OPEN;
+
+  EXPECT_CALL(callback, OnStateChange(channel.get(), JingleChannel::CLOSED))
+      .Times(1);
+
   thread.Start();
   channel->Close();
   thread.Stop();