Deprecate NonThreadSafe in storage/browser/quota in favor of SequenceChecker.

storage/browser/quota/client_usage_tracker.h

 // 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.
 
 #ifndef STORAGE_BROWSER_QUOTA_CLIENT_USAGE_TRACKER_H_
 #define STORAGE_BROWSER_QUOTA_CLIENT_USAGE_TRACKER_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "storage/browser/quota/quota_callbacks.h"
 #include "storage/browser/quota/quota_client.h"
 #include "storage/browser/quota/quota_task.h"
 #include "storage/browser/quota/special_storage_policy.h"
 #include "storage/browser/storage_browser_export.h"
 #include "storage/common/quota/quota_types.h"
 #include "url/gurl.h"
 
 namespace storage {
 
 class StorageMonitor;
 class UsageTracker;
 
 // This class holds per-client usage tracking information and caches per-host
 // usage data.  An instance of this class is created per client.
 class ClientUsageTracker : public SpecialStoragePolicy::Observer,
-                           public base::NonThreadSafe,
                            public base::SupportsWeakPtr<ClientUsageTracker> {
  public:
   typedef base::Callback<void(int64_t limited_usage, int64_t unlimited_usage)>
       HostUsageAccumulator;
   typedef base::Callback<void(const GURL& origin, int64_t usage)>
       OriginUsageAccumulator;
   typedef std::map<std::string, std::set<GURL> > OriginSetByHost;
 
   ClientUsageTracker(UsageTracker* tracker,
                      QuotaClient* client,
@@ skipping 79 matching lines @@
   HostSet cached_hosts_;
   HostUsageMap cached_usage_by_host_;
 
   OriginSetByHost non_cached_limited_origins_by_host_;
   OriginSetByHost non_cached_unlimited_origins_by_host_;
 
   HostUsageAccumulatorMap host_usage_accumulators_;
 
   scoped_refptr<SpecialStoragePolicy> special_storage_policy_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(ClientUsageTracker);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_CLIENT_USAGE_TRACKER_H_