Implement video frame acknowledgements in the chromoting protocol.

remoting/protocol/monitored_video_stub_unittest.cc

Index: remoting/protocol/monitored_video_stub_unittest.cc
diff --git a/remoting/protocol/monitored_video_stub_unittest.cc b/remoting/protocol/monitored_video_stub_unittest.cc
index 67162c319e488f14abbbc99e34455f8e5c422175..5123190d25a86656c54205c52cfc21d7037fa3a4 100644
--- a/remoting/protocol/monitored_video_stub_unittest.cc
+++ b/remoting/protocol/monitored_video_stub_unittest.cc
@@ -51,13 +51,13 @@ TEST_F(MonitoredVideoStubTest, OnChannelConnected) {
   // finishes, so we expect to see at most one transition to not ready.
   EXPECT_CALL(*this, OnVideoChannelStatus(false)).Times(AtMost(1));
 
-  monitor_->ProcessVideoPacket(packet_.Pass(), base::Closure());
+  monitor_->ProcessVideoPacket(packet_.Pass(), VideoStub::ProgressCallback());
   base::RunLoop().RunUntilIdle();
 }
 
 TEST_F(MonitoredVideoStubTest, OnChannelDisconnected) {
   EXPECT_CALL(*this, OnVideoChannelStatus(true));
-  monitor_->ProcessVideoPacket(packet_.Pass(), base::Closure());
+  monitor_->ProcessVideoPacket(packet_.Pass(), VideoStub::ProgressCallback());
 
   EXPECT_CALL(*this, OnVideoChannelStatus(false)).WillOnce(
     InvokeWithoutArgs(
@@ -74,8 +74,8 @@ TEST_F(MonitoredVideoStubTest, OnChannelStayConnected) {
   // finishes, so we expect to see at most one transition to not ready.
   EXPECT_CALL(*this, OnVideoChannelStatus(false)).Times(AtMost(1));
 
-  monitor_->ProcessVideoPacket(packet_.Pass(), base::Closure());
-  monitor_->ProcessVideoPacket(packet_.Pass(), base::Closure());
+  monitor_->ProcessVideoPacket(packet_.Pass(), VideoStub::ProgressCallback());
+  monitor_->ProcessVideoPacket(packet_.Pass(), VideoStub::ProgressCallback());
   base::RunLoop().RunUntilIdle();
 }
 
@@ -84,7 +84,7 @@ TEST_F(MonitoredVideoStubTest, OnChannelStayDisconnected) {
   EXPECT_CALL(*this, OnVideoChannelStatus(true)).Times(1);
   EXPECT_CALL(*this, OnVideoChannelStatus(false)).Times(1);
 
-  monitor_->ProcessVideoPacket(packet_.Pass(), base::Closure());
+  monitor_->ProcessVideoPacket(packet_.Pass(), VideoStub::ProgressCallback());
 
   message_loop_.PostDelayedTask(
       FROM_HERE,