Reset VisualViewport position after same page navigation

third_party/WebKit/Source/core/testing/Internals.idl

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 191 matching lines @@
     unsigned long[] setMemoryCacheCapacities(unsigned long minDeadBytes, unsigned long maxDeadBytes, unsigned long totalBytes);
 
     DOMString counterValue(Element element);
     [RaisesException] long pageNumber(Element element, optional float pageWidth = 800, optional float pageHeight = 600);
     DOMString[] shortcutIconURLs(Document document);
     DOMString[] allIconURLs(Document document);
     [RaisesException] long numberOfPages(optional double pageWidthInPixels = 800, optional double pageHeightInPixels = 600);
     [RaisesException] DOMString pageProperty(DOMString propertyName, long pageNumber);
     [RaisesException] DOMString pageSizeAndMarginsInPixels(long pageIndex, long width, long height, long marginTop, long marginRight, long marginBottom, long marginLeft);
 
+    [RaisesException] float pageScaleFactor();
     [RaisesException] void setPageScaleFactor(float scaleFactor);
     [RaisesException] void setPageScaleFactorLimits(float minScaleFactor, float maxScaleFactor);
 
     [RaisesException] void setIsCursorVisible(Document document, boolean isVisible);
 
     double effectiveMediaVolume(HTMLMediaElement mediaElement);
     DOMString effectivePreload(HTMLMediaElement mediaElement);
     void mediaPlayerRemoteRouteAvailabilityChanged(HTMLMediaElement mediaElement, boolean available);
     void mediaPlayerPlayingRemotelyChanged(HTMLMediaElement mediaElement, boolean remote);
     void setAllowHiddenVolumeControls(HTMLMediaElement mediaElement, boolean allow);
@@ skipping 126 matching lines @@
     void triggerAutoplayViewportCheck(HTMLMediaElement mediaElement);
 
     DOMString getScrollAnimationState(Node node);
 
     DOMString getProgrammaticScrollAnimationState(Node node);
 
     ClientRect visualRect(Node node);
 
     void crash();
 };