| Index: chrome/browser/diagnostics/diagnostics_test.h
 | 
| diff --git a/chrome/browser/diagnostics/diagnostics_test.h b/chrome/browser/diagnostics/diagnostics_test.h
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| index d2e51449fda9d97040a1b4b2ebeba8996cfae7ce..37f71b1dfde3840c0d53936fb635f779248d009c 100644
 | 
| --- a/chrome/browser/diagnostics/diagnostics_test.h
 | 
| +++ b/chrome/browser/diagnostics/diagnostics_test.h
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| @@ -5,6 +5,8 @@
 | 
|  #ifndef CHROME_BROWSER_DIAGNOSTICS_DIAGNOSTICS_TEST_H_
 | 
|  #define CHROME_BROWSER_DIAGNOSTICS_DIAGNOSTICS_TEST_H_
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|  
 | 
| +#include <stddef.h>
 | 
| +
 | 
|  #include "base/compiler_specific.h"
 | 
|  #include "chrome/browser/diagnostics/diagnostics_metrics.h"
 | 
|  #include "chrome/browser/diagnostics/diagnostics_model.h"
 | 
| 
 |