Revert of Port HistoryService::GetVisibleVisitCountToHost to CancelableTaskTracker

chrome/browser/history/history_service.h

Index: chrome/browser/history/history_service.h
diff --git a/chrome/browser/history/history_service.h b/chrome/browser/history/history_service.h
index 44e519cdfd58b192ea410317e55ac40966916067..9d40f25481a598c3877ea2ace82b95b2365ed68e 100644
--- a/chrome/browser/history/history_service.h
+++ b/chrome/browser/history/history_service.h
@@ -291,19 +291,20 @@
       base::CancelableTaskTracker* tracker);
 
   typedef base::Callback<
-      void(bool,         // Were we able to determine the # of visits?
-           int,          // Number of visits.
-           base::Time)>  // Time of first visit. Only set if bool
-                         // is true and int is > 0.
+      void(Handle,
+           bool,        // Were we able to determine the # of visits?
+           int,         // Number of visits.
+           base::Time)> // Time of first visit. Only set if bool
+                        // is true and int is > 0.
       GetVisibleVisitCountToHostCallback;
 
   // Requests the number of user-visible visits (i.e. no redirects or subframes)
   // to all urls on the same scheme/host/port as |url|.  This is only valid for
   // HTTP and HTTPS URLs.
-  base::CancelableTaskTracker::TaskId GetVisibleVisitCountToHost(
+  Handle GetVisibleVisitCountToHost(
       const GURL& url,
-      const GetVisibleVisitCountToHostCallback& callback,
-      base::CancelableTaskTracker* tracker);
+      CancelableRequestConsumerBase* consumer,
+      const GetVisibleVisitCountToHostCallback& callback);
 
   // Called when QueryTopURLsAndRedirects completes. The vector contains a list
   // of the top |result_count| URLs.  For each of these URLs, there is an entry