Block event processing on host/client until the client has authenticated.

remoting/client/input_handler.cc

Index: remoting/client/input_handler.cc
diff --git a/remoting/client/input_handler.cc b/remoting/client/input_handler.cc
index c203f54fb4962830e8b014a01d54280a4aaece3f..1df5ec8ca9d93940bffbe3acc3de5835bc77b4e7 100644
--- a/remoting/client/input_handler.cc
+++ b/remoting/client/input_handler.cc
@@ -23,7 +23,7 @@ InputHandler::InputHandler(ClientContext* context,
 
 void InputHandler::SendKeyEvent(bool press, int keycode) {
   protocol::InputStub* stub = connection_->input_stub();
-  if (stub) {
+  if (stub && stub->Enabled()) {
     KeyEvent* event = new KeyEvent();
     event->set_keycode(keycode);
     event->set_pressed(press);
@@ -34,7 +34,7 @@ void InputHandler::SendKeyEvent(bool press, int keycode) {
 
 void InputHandler::SendMouseMoveEvent(int x, int y) {
   protocol::InputStub* stub = connection_->input_stub();
-  if (stub) {
+  if (stub && stub->Enabled()) {
     MouseEvent* event = new MouseEvent();
     event->set_x(x);
     event->set_y(y);
@@ -46,7 +46,7 @@ void InputHandler::SendMouseMoveEvent(int x, int y) {
 void InputHandler::SendMouseButtonEvent(bool button_down,
                                         MouseEvent::MouseButton button) {
   protocol::InputStub* stub = connection_->input_stub();
-  if (stub) {
+  if (stub && stub->Enabled()) {
     MouseEvent* event = new MouseEvent();
     event->set_button(button);
     event->set_button_down(button_down);