Remove done notifications from incoming message handlers.

remoting/protocol/host_control_dispatcher.cc

Index: remoting/protocol/host_control_dispatcher.cc
diff --git a/remoting/protocol/host_control_dispatcher.cc b/remoting/protocol/host_control_dispatcher.cc
index 3b11fc1fa3df09052481898c1c55173644bb689c..2b067d74cdf2d171ed4e6e6afc4467838259673a 100644
--- a/remoting/protocol/host_control_dispatcher.cc
+++ b/remoting/protocol/host_control_dispatcher.cc
@@ -63,12 +63,10 @@ void HostControlDispatcher::SetCursorShape(
 }
 
 void HostControlDispatcher::OnMessageReceived(
-    scoped_ptr<ControlMessage> message, const base::Closure& done_task) {
+    scoped_ptr<ControlMessage> message) {
   DCHECK(clipboard_stub_);
   DCHECK(host_stub_);
 
-  base::ScopedClosureRunner done_runner(done_task);
-
   if (message->has_clipboard_event()) {
     clipboard_stub_->InjectClipboardEvent(message->clipboard_event());
   } else if (message->has_client_resolution()) {