Remove deprecated NonThreadSafe usage in net\socket.

net/socket/client_socket_pool_manager_impl.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 "net/socket/client_socket_pool_manager_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 80 matching lines @@
                                                socket_factory,
                                                transport_socket_pool_.get(),
                                                nullptr /* no socks proxy */,
                                                nullptr /* no http proxy */,
                                                ssl_config_service,
                                                net_log)) {
   CertDatabase::GetInstance()->AddObserver(this);
 }
 
 ClientSocketPoolManagerImpl::~ClientSocketPoolManagerImpl() {
+  DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
   CertDatabase::GetInstance()->RemoveObserver(this);
 }
 
 void ClientSocketPoolManagerImpl::FlushSocketPoolsWithError(int error) {
   // Flush the highest level pools first, since higher level pools may release
   // stuff to the lower level pools.
 
   for (SSLSocketPoolMap::const_iterator it =
        ssl_socket_pools_for_proxies_.begin();
        it != ssl_socket_pools_for_proxies_.end();
@@ skipping 249 matching lines @@
   FlushSocketPoolsWithError(ERR_NETWORK_CHANGED);
 }
 
 void ClientSocketPoolManagerImpl::DumpMemoryStats(
     base::trace_event::ProcessMemoryDump* pmd,
     const std::string& parent_dump_absolute_name) const {
   return ssl_socket_pool_->DumpMemoryStats(pmd, parent_dump_absolute_name);
 }
 
 }  // namespace net