Protocol-level changes required to support PIN-less authentication.

remoting/protocol/client_control_dispatcher.cc

Index: remoting/protocol/client_control_dispatcher.cc
diff --git a/remoting/protocol/client_control_dispatcher.cc b/remoting/protocol/client_control_dispatcher.cc
index 580ea28a20ed126a4b7985e48a2decd6932da6d2..b261380829b0ced0de75a7664a343541aba3d3e5 100644
--- a/remoting/protocol/client_control_dispatcher.cc
+++ b/remoting/protocol/client_control_dispatcher.cc
@@ -67,6 +67,13 @@ void ClientControlDispatcher::SetCapabilities(
   writer_.Write(SerializeAndFrameMessage(message), base::Closure());
 }
 
+void ClientControlDispatcher::RequestPairing(
+    const PairingRequest& pairing_request) {
+  ControlMessage message;
+  message.mutable_pairing_request()->CopyFrom(pairing_request);
+  writer_.Write(SerializeAndFrameMessage(message), base::Closure());
+}
+
 void ClientControlDispatcher::OnMessageReceived(
     scoped_ptr<ControlMessage> message, const base::Closure& done_task) {
   DCHECK(client_stub_);
@@ -79,6 +86,8 @@ void ClientControlDispatcher::OnMessageReceived(
     client_stub_->SetCapabilities(message->capabilities());
   } else if (message->has_cursor_shape()) {
     client_stub_->SetCursorShape(message->cursor_shape());
+  } else if (message->has_pairing_response()) {
+    client_stub_->SetPairingResponse(message->pairing_response());
   } else {
     LOG(WARNING) << "Unknown control message received.";
   }