ash: ozone: apply transformation to events outside the root window

ui/ozone/platform/dri/dri_cursor.h

Index: ui/ozone/platform/dri/dri_cursor.h
diff --git a/ui/ozone/platform/dri/dri_cursor.h b/ui/ozone/platform/dri/dri_cursor.h
index 9dd182807b248158a332417fe74090023c58ecfe..e21f79b4ab532ff54480c6f651b9d30d052448ea 100644
--- a/ui/ozone/platform/dri/dri_cursor.h
+++ b/ui/ozone/platform/dri/dri_cursor.h
@@ -42,6 +42,7 @@ class DriCursor : public CursorDelegateEvdev {
   virtual void MoveCursor(const gfx::Vector2dF& delta) override;
   virtual bool IsCursorVisible() override;
   virtual gfx::PointF location() override;
+  virtual gfx::PointF root_location() override;
 
  private:
   // The location of the bitmap (the cursor location is the hotspot location).
@@ -60,6 +61,9 @@ class DriCursor : public CursorDelegateEvdev {
 
   // The location of the cursor within the window.
   gfx::PointF cursor_location_;
+
+  // The location of the cursor within the screen.
+  gfx::PointF cursor_root_location_;
 };
 
 }  // namespace ui