Deprecate NonThreadSafe in components/invalidation in favor of SequenceChecker.

components/invalidation/impl/p2p_invalidation_service.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 "components/invalidation/impl/p2p_invalidation_service.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "components/invalidation/impl/invalidation_service_util.h"
@@ skipping 18 matching lines @@
       ParseNotifierOptions(*base::CommandLine::ForCurrentProcess());
   notifier_options.request_context_getter = request_context;
   invalidator_id_ = GenerateInvalidatorClientId();
   invalidator_.reset(new syncer::P2PInvalidator(
           notifier::PushClient::CreateDefault(notifier_options),
           invalidator_id_,
           notification_target));
 }
 
 P2PInvalidationService::~P2PInvalidationService() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 }
 
 void P2PInvalidationService::UpdateCredentials(const std::string& username,
                                                const std::string& password) {
   invalidator_->UpdateCredentials(username, password);
 }
 
 void P2PInvalidationService::RegisterInvalidationHandler(
     syncer::InvalidationHandler* handler) {
   invalidator_->RegisterHandler(handler);
@@ skipping 31 matching lines @@
     base::Callback<void(const base::DictionaryValue&)> caller) const {
   base::DictionaryValue value;
   caller.Run(value);
 }
 
 IdentityProvider* P2PInvalidationService::GetIdentityProvider() {
   return identity_provider_.get();
 }
 
 }  // namespace invalidation