Convert native mouse locations to the locations in screen coordinate in RootWindowHostLinux.

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 7bd34be2e0a450feacbb2502268d4ce22ad59dd2..21e95cedf39377cf433e537519b3372281ab1501 100644
--- a/ui/aura/root_window_host_linux.h
+++ b/ui/aura/root_window_host_linux.h
@@ -17,6 +17,7 @@
 #include "ui/gfx/rect.h"
 
 namespace ui {
+class MouseEvent;
 class ViewProp;
 }
 
@@ -78,6 +79,10 @@ class RootWindowHostLinux : public RootWindowHost,
   // |current_cursor_|.
   void SetCursorInternal(gfx::NativeCursor cursor);
 
+  // Translates the native mouse location into screen coordinates and and
+  // dispatches the event to RootWindowHostDelegate.
+  void TranslateAndDispatchMouseEvent(ui::MouseEvent* event);
+
   RootWindowHostDelegate* delegate_;
 
   // The display and the native X window hosting the root window.