Deprecate NonThreadSafe in components/safe_browsing_db in favor of SequenceChecker.

components/safe_browsing_db/v4_update_protocol_manager.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_SAFE_BROWSING_DB_V4_UPDATE_PROTOCOL_MANAGER_H_
 #define COMPONENTS_SAFE_BROWSING_DB_V4_UPDATE_PROTOCOL_MANAGER_H_
 
 // A class that implements Chrome's interface with the SafeBrowsing V4 update
 // protocol.
 //
 // The V4UpdateProtocolManager handles formatting and making requests of, and
 // handling responses from, Google's SafeBrowsing servers. The purpose of this
 // class is to get hash prefixes from the SB server for the given set of lists.
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "components/safe_browsing/common/safe_browsing_prefs.h"
 #include "components/safe_browsing_db/safebrowsing.pb.h"
 #include "components/safe_browsing_db/util.h"
 #include "components/safe_browsing_db/v4_protocol_manager_util.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
 class GURL;
 
 namespace net {
 class URLFetcher;
 class URLRequestContextGetter;
 }  // namespace net
 
 namespace safe_browsing {
 
 class V4UpdateProtocolManagerFactory;
 
 // V4UpdateCallback is invoked when a scheduled update completes.
 // Parameters:
 //   - The vector of update response protobufs received from the server for
 //     each list type.
 typedef base::Callback<void(std::unique_ptr<ParsedServerResponse>)>
     V4UpdateCallback;
 
 typedef base::Callback<ExtendedReportingLevel()> ExtendedReportingLevelCallback;
 
-class V4UpdateProtocolManager : public net::URLFetcherDelegate,
-                                public base::NonThreadSafe {
+class V4UpdateProtocolManager : public net::URLFetcherDelegate {
  public:
   ~V4UpdateProtocolManager() override;
 
   // Makes the passed |factory| the factory used to instantiate
   // a V4UpdateProtocolManager. Useful for tests.
   static void RegisterFactory(V4UpdateProtocolManagerFactory* factory) {
     factory_ = factory;
   }
 
   // Create an instance of the safe browsing v4 protocol manager.
@@ skipping 123 matching lines @@
   base::OneShotTimer update_timer_;
 
   base::Time last_response_time_;
 
   // Used to interrupt and re-schedule update requests that take too long to
   // complete.
   base::OneShotTimer timeout_timer_;
 
   ExtendedReportingLevelCallback extended_reporting_level_callback_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(V4UpdateProtocolManager);
 };
 
 // Interface of a factory to create V4UpdateProtocolManager.  Useful for tests.
 class V4UpdateProtocolManagerFactory {
  public:
   V4UpdateProtocolManagerFactory() {}
   virtual ~V4UpdateProtocolManagerFactory() {}
   virtual std::unique_ptr<V4UpdateProtocolManager> CreateProtocolManager(
       net::URLRequestContextGetter* request_context_getter,
       const V4ProtocolConfig& config,
       V4UpdateCallback update_callback,
       ExtendedReportingLevelCallback extended_reporting_level_callback) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(V4UpdateProtocolManagerFactory);
 };
 
 }  // namespace safe_browsing
 
 #endif  // COMPONENTS_SAFE_BROWSING_DB_V4_UPDATE_PROTOCOL_MANAGER_H_