Separate display item clients for negative and normal/positive z-order children

third_party/WebKit/Source/web/WebFontImpl.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 41 matching lines @@
     float xHeight() const override;
 
     void drawText(WebCanvas*, const WebTextRun&, const WebFloatPoint& leftBaseline, WebColor,
         const WebRect& clip) const override;
 
     int calculateWidth(const WebTextRun&) const override;
     int offsetForPosition(const WebTextRun&, float position) const override;
     WebFloatRect selectionRectForText(const WebTextRun&, const WebFloatPoint& leftBaseline,
         int height, int from = 0, int to = -1) const override;
 
-    DisplayItemClient displayItemClient() const { return toDisplayItemClient(this); }
+    DisplayItemClient displayItemClient() const { return DisplayItemClient(this); }
     String debugName() const { return "WebFontImpl"; }
 
 private:
     Font m_font;
 };
 
 } // namespace blink
 
 #endif