base::Bind: Convert AppCacheHelper::DeleteAppCacheGroup.

chrome/browser/browsing_data_appcache_helper.cc

 // Copyright (c) 2011 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/browsing_data_appcache_helper.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 45 matching lines @@
 
 void BrowsingDataAppCacheHelper::DeleteAppCacheGroup(
     const GURL& manifest_url) {
   if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&BrowsingDataAppCacheHelper::DeleteAppCacheGroup, this,
                    manifest_url));
     return;
   }
-  appcache_service_->DeleteAppCacheGroup(manifest_url, NULL);
+
+  appcache_service_->DeleteAppCacheGroup(
+      manifest_url, net::CompletionCallback());
 }
 
 BrowsingDataAppCacheHelper::~BrowsingDataAppCacheHelper() {}
 
 void BrowsingDataAppCacheHelper::OnFetchComplete(int rv) {
   if (BrowserThread::CurrentlyOn(BrowserThread::IO)) {
-    // Filter out appache info entries for extensions. Extension state is not
+    // Filter out appcache info entries for extensions. Extension state is not
     // considered browsing data.
     typedef std::map<GURL, appcache::AppCacheInfoVector> InfoByOrigin;
     InfoByOrigin& origin_map = info_collection_->infos_by_origin;
     for (InfoByOrigin::iterator origin = origin_map.begin();
          origin != origin_map.end();) {
       InfoByOrigin::iterator current = origin;
       ++origin;
       if (current->first.SchemeIs(chrome::kExtensionScheme))
         origin_map.erase(current);
     }
@@ skipping 54 matching lines @@
 bool CannedBrowsingDataAppCacheHelper::empty() const {
   return info_collection_->infos_by_origin.empty();
 }
 
 void CannedBrowsingDataAppCacheHelper::StartFetching(
     const base::Closure& completion_callback) {
   completion_callback.Run();
 }
 
 CannedBrowsingDataAppCacheHelper::~CannedBrowsingDataAppCacheHelper() {}