touchui: support XInput2 MT

base/message_pump_x.cc

Index: base/message_pump_x.cc
diff --git a/base/message_pump_x.cc b/base/message_pump_x.cc
index 8e098af95924e57269b906f21eb7975d926d3c0f..98efb11dbc3a1719988bf83e542713fd9330bd7b 100644
--- a/base/message_pump_x.cc
+++ b/base/message_pump_x.cc
@@ -70,9 +70,14 @@ void InitializeXInput2(void) {
     return;
   }
 
+#if defined(USE_XI2_1)
+  int major = 2, minor = 1;
+#else
   int major = 2, minor = 0;
+#endif
   if (XIQueryVersion(display, &major, &minor) == BadRequest) {
-    VLOG(1) << "XInput2 not supported in the server.";
+    VLOG(1) << "XInput" << major << "." << minor
+            << "not supported in the server.";
     xiopcode = -1;
     return;
   }