Seperate visualviewportchanged event into scroll and resize events

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

 /*
  * 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 copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 26 matching lines @@
 namespace blink {
 
 DOMVisualViewport::DOMVisualViewport(LocalDOMWindow* window)
     : m_window(window) {}
 
 DEFINE_TRACE(DOMVisualViewport)
 {
     visitor->trace(m_window);
 }
 
+const AtomicString& DOMVisualViewport::interfaceName() const
+{
+    return EventTargetNames::DOMVisualViewport;
+}
+
+ExecutionContext* DOMVisualViewport::getExecutionContext() const
+{
+    return m_window->getExecutionContext();
+}
+
 double DOMVisualViewport::scrollLeft()
 {
     LocalFrame* frame = m_window->frame();
     if (!frame || !frame->isMainFrame())
         return 0;
 
     if (FrameHost* host = frame->host())
         return host->visualViewport().scrollLeft();
 
     return 0;
@@ skipping 74 matching lines @@
     if (!frame->isMainFrame())
         return 1;
 
     if (FrameHost* host = m_window->frame()->host())
         return host->visualViewport().pageScale();
 
     return 0;
 }
 
 } // namespace blink