Teach the cookie tree view / model about appcaches. Not hooked up to real dat...

chrome/browser/browsing_data_database_helper.cc

 // Copyright (c) 2010 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_database_helper.h"
 
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "chrome/browser/chrome_thread.h"
@@ skipping 68 matching lines @@
 
   ChromeThread::PostTask(ChromeThread::UI, FROM_HERE, NewRunnableMethod(
       this, &BrowsingDataDatabaseHelper::NotifyInUIThread));
 }
 
 void BrowsingDataDatabaseHelper::NotifyInUIThread() {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
   DCHECK(is_fetching_);
   // Note: completion_callback_ mutates only in the UI thread, so it's safe to
   // test it here.
-  if (completion_callback_ != NULL)
+  if (completion_callback_ != NULL) {
     completion_callback_->Run(database_info_);
+    completion_callback_.reset();
+  }
   is_fetching_ = false;
   database_info_.clear();
 }
 
 void BrowsingDataDatabaseHelper::DeleteDatabaseInFileThread(
     const std::string& origin,
     const std::string& name) {
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
   if (!tracker_.get())
     return;
   tracker_->DeleteDatabase(UTF8ToUTF16(origin), UTF8ToUTF16(name), NULL);
 }