Plumb the referrer throughout the OpenURL APIs....

chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Implementation of the SafeBrowsingBlockingPage class.
 
 #include "chrome/browser/safe_browsing/safe_browsing_blocking_page.h"
 
 #include "chrome/app/locales/locale_settings.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 132 matching lines @@
   if (command == "2") {
     // User pressed "Learn more".
     GURL url;
     if (result_ == SafeBrowsingService::URL_MALWARE) {
       url = GURL(l10n_util::GetString(IDS_LEARN_MORE_MALWARE_URL));
     } else if (result_ == SafeBrowsingService::URL_PHISHING) {
       url = GURL(l10n_util::GetString(IDS_LEARN_MORE_PHISHING_URL));
     } else {
       NOTREACHED();
     }
-    web->OpenURL(url, CURRENT_TAB, PageTransition::LINK);
+    web->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::LINK);
     return;
   }
   if (command == "3") {
     // User pressed "Report error" for a phishing site.
     // Note that we cannot just put a link in the interstitial at this point.
     // It is not OK to navigate in the context of an interstitial page.
     DCHECK(result_ == SafeBrowsingService::URL_PHISHING);
     GURL report_url =
         safe_browsing_util::GeneratePhishingReportUrl(kSbReportPhishingUrl,
                                                       url().spec());
     web->HideInterstitialPage(false, false);
-    web->OpenURL(report_url, CURRENT_TAB, PageTransition::LINK);
+    web->OpenURL(report_url, GURL(), CURRENT_TAB, PageTransition::LINK);
     return;
   }
   if (command == "4") {
     // We're going to take the user to Google's SafeBrowsing diagnostic page.
     std::string diagnostic =
         StringPrintf(kSbDiagnosticUrl,
                      EscapeQueryParamValue(url().spec()).c_str());
     GURL diagnostic_url(diagnostic);
     diagnostic_url = google_util::AppendGoogleLocaleParam(diagnostic_url);
     DCHECK(result_ == SafeBrowsingService::URL_MALWARE);
     web->HideInterstitialPage(false, false);
-    web->OpenURL(diagnostic_url, CURRENT_TAB, PageTransition::LINK);
+    web->OpenURL(diagnostic_url, GURL(), CURRENT_TAB, PageTransition::LINK);
     return;
   }
 
   proceed_ = command == "1";
 
   if (proceed_) {
     if (is_main_frame_)
       web->HideInterstitialPage(true, true);
     else
       web->HideInterstitialPage(false, false);
@@ skipping 30 matching lines @@
   param.result = result_;
   param.client = client_;
   param.render_process_host_id = render_process_host_id_;
   param.render_view_id = render_view_id_;
   param.proceed = proceed_;
   io_thread->message_loop()->PostTask(FROM_HERE, NewRunnableMethod(
       sb_service_,
       &SafeBrowsingService::OnBlockingPageDone,
       param));
 }