654     NavigationEvent* last_nav_event_traced,  in GetRemainingReferrerChain()  argument
659   GURL last_main_frame_url_traced(last_nav_event_traced->source_main_frame_url);  in GetRemainingReferrerChain()
662     while (!last_nav_event_traced->IsUserInitiated()) {  in GetRemainingReferrerChain()
663       last_nav_event_traced = navigation_event_list_.FindNavigationEvent(  in GetRemainingReferrerChain()
664           last_nav_event_traced->last_updated,  in GetRemainingReferrerChain()
665           last_nav_event_traced->source_url,  in GetRemainingReferrerChain()
666           last_nav_event_traced->source_main_frame_url,  in GetRemainingReferrerChain()
667           last_nav_event_traced->source_tab_id);  in GetRemainingReferrerChain()
668       if (!last_nav_event_traced)  in GetRemainingReferrerChain()
670       AddToReferrerChain(out_referrer_chain, last_nav_event_traced,  in GetRemainingReferrerChain()
677       last_main_frame_url_traced = last_nav_event_traced->source_main_frame_url;  in GetRemainingReferrerChain()
682     last_nav_event_traced = navigation_event_list_.FindNavigationEvent(  in GetRemainingReferrerChain()
683         last_nav_event_traced->last_updated, last_nav_event_traced->source_url,  in GetRemainingReferrerChain()
684         last_nav_event_traced->source_main_frame_url,  in GetRemainingReferrerChain()
685         last_nav_event_traced->source_tab_id);  in GetRemainingReferrerChain()
686     if (!last_nav_event_traced)  in GetRemainingReferrerChain()
689     AddToReferrerChain(out_referrer_chain, last_nav_event_traced,  in GetRemainingReferrerChain()
697     last_main_frame_url_traced = last_nav_event_traced->source_main_frame_url;  in GetRemainingReferrerChain()