Replace IOAllowed with WaitAllowed in PlatformThread::Join()

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"
@@ skipping 55 matching lines @@
 void BrowserProcessSubThread::IOThreadPreCleanUp() {
   // 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();
+  {
+    base::ThreadRestrictions::ScopedAllowWait allow_wait_to_stop_child_procs;
+    BrowserChildProcessHostImpl::TerminateAll();
+  }
 
   // Unregister GpuMemoryBuffer dump provider before IO thread is shut down.
   base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
       BrowserGpuMemoryBufferManager::current());
 }
 
 }  // namespace content