Shutdown Service Workers before the profile is destroyed

content/browser/service_worker/service_worker_process_manager.cc

 // Copyright 2014 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/browser/service_worker/service_worker_process_manager.h"
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/site_instance.h"
@@ skipping 44 matching lines @@
 }
 
 ServiceWorkerProcessManager::~ServiceWorkerProcessManager() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(browser_context_ == NULL)
       << "Call Shutdown() before destroying |this|, so that racing method "
       << "invocations don't use a destroyed BrowserContext.";
 }
 
 void ServiceWorkerProcessManager::Shutdown() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   browser_context_ = NULL;
   for (std::map<int, ProcessInfo>::const_iterator it = instance_info_.begin();
        it != instance_info_.end();
        ++it) {
     RenderProcessHost* rph = RenderProcessHost::FromID(it->second.process_id);
     DCHECK(rph);
     static_cast<RenderProcessHostImpl*>(rph)->DecrementWorkerRefCount();
   }
   instance_info_.clear();
 }
@@ skipping 195 matching lines @@
 namespace base {
 // Destroying ServiceWorkerProcessManagers only on the UI thread allows the
 // member WeakPtr to safely guard the object's lifetime when used on that
 // thread.
 void DefaultDeleter<content::ServiceWorkerProcessManager>::operator()(
     content::ServiceWorkerProcessManager* ptr) const {
   content::BrowserThread::DeleteSoon(
       content::BrowserThread::UI, FROM_HERE, ptr);
 }
 }  // namespace base