Implement ChildThread::shutdown and clear members that have refs into blink

content/worker/worker_thread.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 "content/worker/worker_thread.h"
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/threading/thread_local.h"
 #include "content/child/appcache_dispatcher.h"
@@ skipping 40 matching lines @@
   channel()->AddFilter(indexed_db_message_filter_.get());
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line);
 }
 
 WorkerThread::~WorkerThread() {
 }
 
 void WorkerThread::Shutdown() {
+  ChildThread::Shutdown();
+
   // Shutdown in reverse of the initialization order.
   channel()->RemoveFilter(indexed_db_message_filter_.get());
   indexed_db_message_filter_ = NULL;
 
   channel()->RemoveFilter(db_message_filter_.get());
   db_message_filter_ = NULL;
 
   WebKit::shutdown();
   lazy_tls.Pointer()->Set(NULL);
 }
@@ skipping 37 matching lines @@
 
 void WorkerThread::RemoveWorkerStub(WebSharedWorkerStub* stub) {
   worker_stubs_.erase(stub);
 }
 
 void WorkerThread::AddWorkerStub(WebSharedWorkerStub* stub) {
   worker_stubs_.insert(stub);
 }
 
 }  // namespace content