Plumbing for providing a cache thread MessageLoop to the DiskCache backend....

webkit/tools/test_shell/simple_appcache_system.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 "webkit/tools/test_shell/simple_appcache_system.h"
 
 #include "base/callback.h"
 #include "base/lock.h"
 #include "base/task.h"
 #include "base/waitable_event.h"
@@ skipping 285 matching lines @@
     base::WaitableEvent event(false, false);
     db_thread_.message_loop()->PostTask(FROM_HERE,
         NewRunnableFunction(&SignalEvent, &event));
     event.Wait();
   }
 }
 
 void SimpleAppCacheSystem::InitOnUIThread(
     const FilePath& cache_directory) {
   DCHECK(!ui_message_loop_);
-  AppCacheThread::InitIDs(DB_THREAD_ID, IO_THREAD_ID);
+  // TODO(michaeln): provide a cache_thread message loop
+  AppCacheThread::Init(DB_THREAD_ID, IO_THREAD_ID, NULL);
   ui_message_loop_ = MessageLoop::current();
   cache_directory_ = cache_directory;
 }
 
 void SimpleAppCacheSystem::InitOnIOThread(URLRequestContext* request_context) {
   if (!is_initailized_on_ui_thread())
     return;
 
   DCHECK(!io_message_loop_);
   io_message_loop_ = MessageLoop::current();
@@ skipping 51 matching lines @@
 
   delete backend_impl_;
   delete service_;
   backend_impl_ = NULL;
   service_ = NULL;
   io_message_loop_ = NULL;
 
   // Just in case the main thread is waiting on it.
   backend_proxy_->SignalEvent();
 }