Move Navigation Timing and other various window-level objects out of page/

Source/core/frame/Navigator.idl

 /*
     Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 
     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,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 16 matching lines @@
     void getStorageUpdates(); // FIXME: Remove this method or rename to yieldForStorageUpdates.
 
     // Non-standard.
     [MeasureAs=NavigatorProductSub] readonly attribute DOMString productSub;
     [MeasureAs=NavigatorVendor] readonly attribute DOMString vendor;
     [MeasureAs=NavigatorVendorSub] readonly attribute DOMString vendorSub;
 };
 
 Navigator implements NavigatorID;
 Navigator implements NavigatorOnLine;