Remving global statics from the headers, so we can split-link.

base/metrics/stats_table.h

 // Copyright (c) 2011 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 34 matching lines @@
   // max_counters is the maximum number of counters the table will support.
   // If the StatsTable already exists, this number is ignored.
   StatsTable(const std::string& name, int max_threads, int max_counters);
 
   // Destroys the StatsTable.  When the last StatsTable is destroyed
   // (across all processes), the StatsTable is removed from disk.
   ~StatsTable();
 
   // For convenience, we create a static table.  This is generally
   // used automatically by the counters.
-  static StatsTable* current() { return global_table_; }
+  static StatsTable* current();
 
   // Set the global table for use in this process.
-  static void set_current(StatsTable* value) { global_table_ = value; }
+  static void set_current(StatsTable* value);
 
   // Get the slot id for the calling thread. Returns 0 if no
   // slot is assigned.
   int GetSlot() const;
 
   // All threads that contribute data to the table must register with the
   // table first.  This function will set thread local storage for the
   // thread containing the location in the table where this thread will
   // write its counter data.
   //
@@ skipping 109 matching lines @@
   base::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_;
   ThreadLocalStorage::Slot tls_index_;
 
-  static StatsTable* global_table_;
-
   DISALLOW_COPY_AND_ASSIGN(StatsTable);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_STATS_TABLE_H_