Add page coordinates to the ViewportAPI

third_party/WebKit/Source/core/frame/DOMVisualViewport.h

 /*
  * Copyright (C) 2016 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 @@
     ~DOMVisualViewport() override;
 
     DECLARE_VIRTUAL_TRACE();
 
     // EventTarget overrides:
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override;
 
     double scrollLeft();
     double scrollTop();
+    double pageX();
+    double pageY();
     double clientWidth();
     double clientHeight();
     double scale();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(resize);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(scroll);
 
 private:
     explicit DOMVisualViewport(LocalDOMWindow*);
 
     Member<LocalDOMWindow> m_window;
 };
 
 } // namespace blink
 
 #endif // DOMVisualViewport_h