Aura/ash split: Don't use X11 window borders.

ui/base/events.h

Index: ui/base/events.h
diff --git a/ui/base/events.h b/ui/base/events.h
index 1bf5ec4fa31860b6d9e2e5c517fcabfc4f7612c4..c5f6246473e17ea37fde8f002e6bc7002fea6cb7 100644
--- a/ui/base/events.h
+++ b/ui/base/events.h
@@ -139,6 +139,11 @@ UI_EXPORT base::TimeDelta EventTimeFromNative(
 UI_EXPORT gfx::Point EventLocationFromNative(
     const base::NativeEvent& native_event);
 
+// Gets the location relative to the root window from a native event. If this
+// can't be determined, fall back on the window relative location.
+UI_EXPORT gfx::Point EventRootLocationFromNative(
+    const base::NativeEvent& native_event);
+
 #if defined(USE_X11)
 // Returns the 'real' button for an event. The button reported in slave events
 // does not take into account any remapping (e.g. using xmodmap), while the