Port HistoryService::GetVisibleVisitCountToHost to CancelableTaskTracker

chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
index 5875cb377e678d39fd49a2bf552b971cc9147f5c..81c3f2a116fdd9cee692ebffd320a0c4f6fadf70 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
@@ -286,9 +286,9 @@ SafeBrowsingBlockingPage::SafeBrowsingBlockingPage(
   if (history_service) {
     history_service->GetVisibleVisitCountToHost(
         url_,
-        &request_consumer_,
         base::Bind(&SafeBrowsingBlockingPage::OnGotHistoryCount,
-                  base::Unretained(this)));
+                   base::Unretained(this)),
+        &request_tracker_);
   }
 
   if (!is_main_frame_load_blocked_) {
@@ -594,8 +594,7 @@ void SafeBrowsingBlockingPage::OnDontProceed() {
   }
 }
 
-void SafeBrowsingBlockingPage::OnGotHistoryCount(HistoryService::Handle handle,
-                                                 bool success,
+void SafeBrowsingBlockingPage::OnGotHistoryCount(bool success,
                                                  int num_visits,
                                                  base::Time first_visit) {
   if (success)