Use a direct include of time headers in base/, part 1.

base/metrics/stats_counters.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.
 
 #ifndef BASE_METRICS_STATS_COUNTERS_H_
 #define BASE_METRICS_STATS_COUNTERS_H_
 
 #include <string>
 
 #include "base/base_export.h"
 #include "base/compiler_specific.h"
 #include "base/metrics/stats_table.h"
-#include "base/time.h"
+#include "base/time/time.h"
 
 namespace base {
 
 // StatsCounters are dynamically created values which can be tracked in
 // the StatsTable.  They are designed to be lightweight to create and
 // easy to use.
 //
 // Since StatsCounters can be created dynamically by name, there is
 // a hash table lookup to find the counter in the table.  A StatsCounter
 // object can be created once and used across multiple threads safely.
@@ skipping 164 matching lines @@
     timer_.Stop();
   }
 
  private:
   T& timer_;
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_STATS_COUNTERS_H_