aura: More fix for touch-event calibration in multi-monito setting.

ui/aura/root_window_host_linux.h

Index: ui/aura/root_window_host_linux.h
diff --git a/ui/aura/root_window_host_linux.h b/ui/aura/root_window_host_linux.h
index ec41cc10e54d09e2881092f17936cf0567ed5136..c8436c2714da9614de4a941055c288f8bc1c0bee 100644
--- a/ui/aura/root_window_host_linux.h
+++ b/ui/aura/root_window_host_linux.h
@@ -22,6 +22,10 @@ class ViewProp;
 
 namespace aura {
 
+namespace internal {
+class TouchEventCalibrate;
+}
+
 class RootWindowHostLinux : public RootWindowHost,
                             public MessageLoop::Dispatcher {
  public:
@@ -101,6 +105,8 @@ class RootWindowHostLinux : public RootWindowHost,
 
   scoped_ptr<ui::ViewProp> prop_;
 
+  scoped_ptr<internal::TouchEventCalibrate> touch_calibrate_;
+
   ui::X11AtomCache atom_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindowHostLinux);