Deprecate NonThreadSafe in content/browser/streams in favor of SequenceChecker.

content/browser/streams/stream_registry.h

 // Copyright (c) 2013 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 CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_
 #define CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <set>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/threading/non_thread_safe.h"
+#include "base/sequence_checker.h"
 #include "content/browser/streams/stream_register_observer.h"
 #include "content/common/content_export.h"
 #include "url/gurl.h"
 
 namespace content {
 
 class Stream;
 
 // Maintains a mapping of blob: URLs to active streams.
-class CONTENT_EXPORT StreamRegistry : public base::NonThreadSafe {
+class CONTENT_EXPORT StreamRegistry {
  public:
   StreamRegistry();
   virtual ~StreamRegistry();
 
   // Registers a stream, and sets its URL.
   void RegisterStream(Stream* stream);
 
   // Clones a stream.  Returns true on success, or false if |src_url| doesn't
   // exist.
   bool CloneStream(const GURL& url, const GURL& src_url);
@@ skipping 31 matching lines @@
   StreamMap streams_;
   std::map<GURL, StreamRegisterObserver*> register_observers_;
   std::set<GURL> reader_aborted_urls_;
 
   size_t total_memory_usage_;
 
   // Maximum amount of memory allowed to use for Stream instances registered
   // with this registry.
   size_t max_memory_usage_;
 
+  SEQUENCE_CHECKER(sequence_checker_);
+
   DISALLOW_COPY_AND_ASSIGN(StreamRegistry);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_