Reset page scale factor to 1.0 on navigation to a new page.

Source/core/testing/Internals.cpp

 /*
  * 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 1762 matching lines @@
 {
     Document* document = contextDocument();
     if (!document || !document->page()) {
         ec = INVALID_ACCESS_ERR;
         return;
     }
     Page* page = document->page();
     page->setPageScaleFactor(scaleFactor, IntPoint(x, y));
 }
 
+float Internals::pageScaleFactor(ExceptionCode& ec)
+{
+    Document* document = contextDocument();
+    if (!document || !document->page()) {
+        ec = INVALID_ACCESS_ERR;
+        return 1;
+    }
+    return document->page()->pageScaleFactor();
+}
+
 void Internals::webkitWillEnterFullScreenForElement(Document* document, Element* element)
 {
     if (!document)
         return;
     document->webkitWillEnterFullScreenForElement(element);
 }
 
 void Internals::webkitDidEnterFullScreenForElement(Document* document, Element* element)
 {
     if (!document)
@@ skipping 204 matching lines @@
 
     RenderObject* renderer = select->renderer();
     if (!renderer->isMenuList())
         return false;
 
     RenderMenuList* menuList = toRenderMenuList(renderer);
     return menuList->popupIsVisible();
 }
 
 }