Remove an unused bool member variable "opened_" from StatsTable.

base/stats_table.h

 // Copyright (c) 2006-2008 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.
 //
 // A StatsTable is a table of statistics.  It can be used across multiple
 // processes and threads, maintaining cheap statistics counters without
 // locking.
 //
 // The goal is to make it very cheap and easy for developers to add
 // counters to code, without having to build one-off utilities or mechanisms
@@ skipping 154 matching lines @@
   // On success, returns the counter_id for the newly added counter.
   // On failure, returns 0.
   int AddCounter(const std::string& name);
 
   // Get the TLS data for the calling thread.  Returns NULL if none is
   // initialized.
   StatsTableTLSData* GetTLSData() const;
 
   typedef base::hash_map<std::string, int> CountersMap;
 
-  bool                opened_;
-  StatsTablePrivate*  impl_;
+  StatsTablePrivate* impl_;
   // The counters_lock_ protects the counters_ hash table.
-  Lock                counters_lock_;
+  Lock counters_lock_;
   // The counters_ hash map is an in-memory hash of the counters.
   // It is used for quick lookup of counters, but is cannot be used
   // as a substitute for what is in the shared memory.  Even though
   // we don't have a counter in our hash table, another process may
   // have created it.
-  CountersMap         counters_;
-  TLSSlot             tls_index_;
+  CountersMap counters_;
+  TLSSlot tls_index_;
 
-  static StatsTable*  global_table_;
+  static StatsTable* global_table_;
+
   DISALLOW_EVIL_CONSTRUCTORS(StatsTable);
 };
 
 #endif  // BASE_STATS_TABLE_H__