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

remoting/client/x11_view.cc

Index: remoting/client/x11_view.cc
diff --git a/remoting/client/x11_view.cc b/remoting/client/x11_view.cc
index e40891a8e9d9f63dd5d36b7c6be49365a8008ea3..43ecd656c7e08493494af48113e02780463b0203 100644
--- a/remoting/client/x11_view.cc
+++ b/remoting/client/x11_view.cc
@@ -43,7 +43,13 @@ bool X11View::Initialize() {
   XStoreName(display_, window_, "X11 Remoting");
 
   // Specifies what kind of messages we want to receive.
-  XSelectInput(display_, window_, ExposureMask | ButtonPressMask);
+  XSelectInput(display_,
+               window_,
+               ExposureMask
+               | KeyPressMask | KeyReleaseMask
+               | ButtonPressMask | ButtonReleaseMask
+               | PointerMotionMask);
+
   XMapWindow(display_, window_);
   return true;
 }