Reland of Check that all shared workers are terminated.

content/browser/browser_process_sub_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/browser/browser_process_sub_thread.h"
 
 #include "base/debug/leak_tracker.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/trace_event/memory_dump_manager.h"
 #include "build/build_config.h"
 #include "content/browser/browser_child_process_host_impl.h"
 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/browser/notification_service_impl.h"
+#include "content/browser/shared_worker/shared_worker_service_impl.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request.h"
 
 #if defined(OS_WIN)
 #include "base/win/scoped_com_initializer.h"
 #endif
 
 namespace content {
 
 BrowserProcessSubThread::BrowserProcessSubThread(BrowserThread::ID identifier)
@@ skipping 29 matching lines @@
   BrowserThreadImpl::CleanUp();
 
   notification_service_.reset();
 
 #if defined(OS_WIN)
   com_initializer_.reset();
 #endif
 }
 
 void BrowserProcessSubThread::IOThreadPreCleanUp() {
+  // TODO(alokp): Remove after collecting crash data.
+  // Temporary checks to verify that all shared workers are terminated.
+  // It is suspected that shared workers prevent render process hosts
+  // from shutting down: crbug.com/608049
+  SharedWorkerServiceImpl::GetInstance()->CheckAllWorkersTerminated();
+
   // Kill all things that might be holding onto
   // net::URLRequest/net::URLRequestContexts.
 
   // Destroy all URLRequests started by URLFetchers.
   net::URLFetcher::CancelAll();
 
   // If any child processes are still running, terminate them and
   // and delete the BrowserChildProcessHost instances to release whatever
   // IO thread only resources they are referencing.
   BrowserChildProcessHostImpl::TerminateAll();
 
   // Unregister GpuMemoryBuffer dump provider before IO thread is shut down.
   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
       BrowserGpuMemoryBufferManager::current());
 }
 
 }  // namespace content