Add mouse/keyboard event support to Chromoting client (Pepper and X11).

remoting/client/x11_input_handler.h

Index: remoting/client/x11_input_handler.h
diff --git a/remoting/client/x11_input_handler.h b/remoting/client/x11_input_handler.h
index eedaf543a657b82feec94731aa4d8eac29b6fdf9..e84e4b910a1648381984862477c1098ddf5fbda7 100644
--- a/remoting/client/x11_input_handler.h
+++ b/remoting/client/x11_input_handler.h
@@ -27,6 +27,10 @@ class X11InputHandler : public InputHandler {
 
   void ScheduleX11EventHandler();
 
+  // This is really an XEvent, but if we include Xlib.h in this file, it will
+  // cause conflicts with other headers. See note at top of
+  // x11_input_handler.cc.
+  void HandleKeyEvent(void* event);
   void HandleMouseMoveEvent(int x, int y);
   void HandleMouseButtonEvent(bool button_down, int xbutton_id);