Move touch CTM from X into Chrome

ui/aura/window_tree_host_x11.h

Index: ui/aura/window_tree_host_x11.h
diff --git a/ui/aura/window_tree_host_x11.h b/ui/aura/window_tree_host_x11.h
index 31232b1270072315d88a17c578b475c39e6e2ed7..34e1603b1915d13b1ca7331af270554742476808 100644
--- a/ui/aura/window_tree_host_x11.h
+++ b/ui/aura/window_tree_host_x11.h
@@ -64,7 +64,7 @@ class AURA_EXPORT WindowTreeHostX11 : public WindowTreeHost,
   // Called when X Configure Notify event is recevied.
   virtual void OnConfigureNotify();
 
-  // Translates the native mouse location into screen coordinates and and
+  // Translates the native mouse location into screen coordinates and
   // dispatches the event via WindowEventDispatcher.
   virtual void TranslateAndDispatchLocatedEvent(ui::LocatedEvent* event);
 
@@ -74,6 +74,8 @@ class AURA_EXPORT WindowTreeHostX11 : public WindowTreeHost,
   ui::X11AtomCache* atom_cache() { return &atom_cache_; }
 
  private:
+  bool IsTouchEventTargetingThisRootWindow(XEvent* xev);
+
   // Dispatches XI2 events. Note that some events targetted for the X root
   // window are dispatched to the aura root window (e.g. touch events after
   // calibration).