Restore scale even if scroll is not restored

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 142 matching lines @@
     bool tabKeyCyclesThroughElements() const { return m_tabKeyCyclesThroughElements; }
 
     void unmarkAllTextMatches();
 
     // DefersLoading is used to delay loads during modal dialogs.
     // Modal dialogs are supposed to freeze all background processes
     // in the page, including prevent additional loads from staring/continuing.
     void setDefersLoading(bool);
     bool defersLoading() const { return m_defersLoading; }
 
-    void setPageScaleFactor(float scale, const IntPoint& origin);
+    void setPageScaleFactor(float);
     float pageScaleFactor() const;
 
     float deviceScaleFactor() const { return m_deviceScaleFactor; }
     void setDeviceScaleFactor(float);
     void setDeviceColorProfile(const Vector<char>&);
     void resetDeviceColorProfile();
 
     static void allVisitedStateChanged();
     static void visitedStateChanged(LinkHash visitedHash);
 
@@ skipping 93 matching lines @@
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtrWillBeMember<FrameHost> m_frameHost;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT WillBeHeapSupplement<Page>;
 
 } // namespace blink
 
 #endif // Page_h