nsIGlobalHistory2 in Firefox 1.5

 Add a URI to global history

 @param aURI      the URI of the page
 @param aRedirect whether the URI was redirected to another location;
                  this is 'true' for the original URI which is
                  redirected.
 @param aToplevel whether the URI is loaded in a top-level window
 @param aReferrer the URI of the referring page

 @note  Docshell will not filter out URI schemes like chrome: data:
        about: and view-source:.  Embedders should consider filtering out
        these schemes and others, e.g. mailbox: for the main URI and the
        referrer.

 Checks to see whether the given URI is in history.

 @param aURI the uri to the page
 @return true if a URI has been visited

 Set the page title for the given uri. URIs that are not already in
 global history will not be added.

 @param aURI    the URI for which to set to the title
 @param aTitle  the page title