It should be based upon 1970, not reference date!
Created attachment 28882 [details] patch to track time since 1970 simple & straightforward
Comment on attachment 28882 [details] patch to track time since 1970 r=me
67-218-106-94:WebKit bolsinga$ svn commit Sending WebCore/ChangeLog Sending WebCore/platform/mac/GeolocationServiceMac.mm Transmitting file data .. Committed revision 41936.