prune down content_dll change to just the CONTENT_EXPORTS

content/common/content_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.
 
 // Counters used within the browser.
 
 #ifndef CONTENT_COMMON_CONTENT_COUNTERS_H_
 #define CONTENT_COMMON_CONTENT_COUNTERS_H_
 #pragma once
 
+#include "content/common/content_export.h"
+
 namespace base {
 class StatsCounter;
 class StatsCounterTimer;
 class StatsRate;
 }
 
 namespace content {
 
 class Counters {
  public:
   // The amount of time spent in chrome initialization.
-  static base::StatsCounterTimer& chrome_main();
+  CONTENT_EXPORT static base::StatsCounterTimer& chrome_main();
 
   // The amount of time spent in renderer initialization.
   static base::StatsCounterTimer& renderer_main();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_CONTENT_COUNTERS_H_