Remove VisitedLink dependency on rest of chrome

chrome/browser/history/history_backend.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/history/history_backend.h"
 
 #include <algorithm>
 #include <functional>
 #include <list>
 #include <map>
@@ skipping 1040 matching lines @@
     url_info.set_title(UTF8ToUTF16(url.spec()));
   }
 
   url_info.set_last_visit(Time::Now());
   // Mark the page hidden. If the user types it in, it'll unhide.
   url_info.set_hidden(true);
 
   db_->AddURL(url_info);
 }
 
-void HistoryBackend::IterateURLs(HistoryService::URLEnumerator* iterator) {
+void HistoryBackend::IterateURLs(
+    const scoped_refptr<VisitedLinkDelegate::URLEnumerator>& iterator) {
   if (db_.get()) {
     HistoryDatabase::URLEnumerator e;
     if (db_->InitURLEnumeratorForEverything(&e)) {
       URLRow info;
       while (e.GetNextURL(&info)) {
-        iterator->OnURL(info);
+        iterator->OnURL(info.url());
       }
       iterator->OnComplete(true);  // Success.
       return;
     }
   }
   iterator->OnComplete(false);  // Failure.
 }
 
 bool HistoryBackend::GetAllTypedURLs(URLRows* urls) {
   if (db_.get())
@@ skipping 1898 matching lines @@
   info.url_id = visit.url_id;
   info.time = visit.visit_time;
   info.transition = visit.transition;
   // If we don't have a delegate yet during setup or shutdown, we will drop
   // these notifications.
   if (delegate_.get())
     delegate_->NotifyVisitDBObserversOnAddVisit(info);
 }
 
 }  // namespace history