Instrument SdchOwner for clock nullification.

net/sdch/sdch_owner.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 NET_SDCH_SDCH_OWNER_H_
 #define NET_SDCH_SDCH_OWNER_H_
 
 #include <string>
 
 #include "base/memory/memory_pressure_listener.h"
@@ skipping 69 matching lines @@
   net::SdchDictionaryFetcher fetcher_;
 
   std::map<std::string, DictionaryInfo> local_dictionary_info_;
   size_t total_dictionary_bytes_;
 
   scoped_ptr<base::Clock> clock_;
 
   size_t max_total_dictionary_size_;
   size_t min_space_for_dictionary_fetch_;
 
+#if defined(OS_CHROMEOS)
+  // For debugging http://crbug.com/454198; remove when resolved.
+  unsigned int destroyed_;
+#endif
+
   base::MemoryPressureListener memory_pressure_listener_;
 
   DISALLOW_COPY_AND_ASSIGN(SdchOwner);
 };
 
 }  // namespace net
 
 #endif  // NET_SDCH_SDCH_OWNER_H_