Ensure that remoting_unittests fail when playout delay > 0.

remoting/protocol/connection_unittest.cc

Index: remoting/protocol/connection_unittest.cc
diff --git a/remoting/protocol/connection_unittest.cc b/remoting/protocol/connection_unittest.cc
index ed355526cfe9595064d7a396c9e763e1f5acdcd2..c83d5d1e725780861195f075d41e0232b471604b 100644
--- a/remoting/protocol/connection_unittest.cc
+++ b/remoting/protocol/connection_unittest.cc
@@ -532,7 +532,10 @@ TEST_P(ConnectionTest, Video) {
       host_connection_->StartVideoStream(
           base::MakeUnique<TestScreenCapturer>());
 
-  WaitNextVideoFrame();
+  // Receive 5 frames.
+  for (int i = 0; i < 5; ++i) {
+    WaitNextVideoFrame();
+  }
 }
 
 // Verifies that the VideoStream doesn't loose any video frames while the