Fix tests to avoid page scale reset when setting page scale.

Source/core/testing/Internals.h

 /*
  * 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 237 matching lines @@
 
     int pageNumber(Element*, float pageWidth = 800, float pageHeight = 600);
     Vector<String> shortcutIconURLs(Document*) const;
     Vector<String> allIconURLs(Document*) const;
 
     int numberOfPages(float pageWidthInPixels = 800, float pageHeightInPixels = 600);
     String pageProperty(String, int, ExceptionState& = ASSERT_NO_EXCEPTION_STATE) const;
     String pageSizeAndMarginsInPixels(int, int, int, int, int, int, int, ExceptionState& = ASSERT_NO_EXCEPTION_STATE) const;
 
     void setDeviceScaleFactor(float scaleFactor, ExceptionState&);
-    void setPageScaleFactor(float scaleFactor, int x, int y, ExceptionState&);
 
     void setIsCursorVisible(Document*, bool, ExceptionState&);
 
     void webkitWillEnterFullScreenForElement(Document*, Element*);
     void webkitDidEnterFullScreenForElement(Document*, Element*);
     void webkitWillExitFullScreenForElement(Document*, Element*);
     void webkitDidExitFullScreenForElement(Document*, Element*);
 
     void registerURLSchemeAsBypassingContentSecurityPolicy(const String& scheme);
     void removeURLSchemeRegisteredAsBypassingContentSecurityPolicy(const String& scheme);
@@ skipping 40 matching lines @@
     RefPtr<InternalRuntimeFlags> m_runtimeFlags;
     RefPtr<ScrollingCoordinator> m_scrollingCoordinator;
     int m_touchEventTargetRectUpdateCount;
     RefPtr<LayerRectList> m_currentTouchEventRects;
     RefPtr<InternalProfilers> m_profilers;
 };
 
 } // namespace WebCore
 
 #endif