Implement video frame acknowledgements in the chromoting protocol.

remoting/host/chromoting_host_unittest.cc

Index: remoting/host/chromoting_host_unittest.cc
diff --git a/remoting/host/chromoting_host_unittest.cc b/remoting/host/chromoting_host_unittest.cc
index 19efc25c37052923a67f09d65b70870f9c6d9550..ca44ed198fa0aaa4bbaa904ac974e77e07099bf4 100644
--- a/remoting/host/chromoting_host_unittest.cc
+++ b/remoting/host/chromoting_host_unittest.cc
@@ -57,10 +57,10 @@ void PostQuitTask(base::MessageLoop* message_loop) {
   message_loop->PostTask(FROM_HERE, base::MessageLoop::QuitClosure());
 }
 
-// Run the task and delete it afterwards. This action is used to deal with
-// done callbacks.
+// This action is used to call the done callbacks for the VideoCapturer.
 ACTION(RunDoneTask) {
-  arg1.Run();
+  arg1.Run(protocol::VideoStub::PacketProgress::SENT);
+  arg1.Run(protocol::VideoStub::PacketProgress::DONE);
 }
 
 }  // namespace