| Index: content/browser/browser_thread_impl.h
 | 
| diff --git a/content/browser/browser_thread_impl.h b/content/browser/browser_thread_impl.h
 | 
| index b4ca49b027a76f1c8c62e99f7f12d6bf2698cb2a..17263452b83307db9253995b98a63308b0dfede7 100644
 | 
| --- a/content/browser/browser_thread_impl.h
 | 
| +++ b/content/browser/browser_thread_impl.h
 | 
| @@ -18,8 +18,9 @@ class CONTENT_EXPORT BrowserThreadImpl : public BrowserThread,
 | 
|    // to construct a BrowserThreadImpl that already exists.
 | 
|    explicit BrowserThreadImpl(BrowserThread::ID identifier);
 | 
|  
 | 
| -  // Special constructor for the main (UI) thread and unittests. We use a dummy
 | 
| -  // thread here since the main thread already exists.
 | 
| +  // Special constructor for the main (UI) thread and unittests. If a
 | 
| +  // |message_loop| is provied, we use a dummy thread here since the main
 | 
| +  // thread already exists.
 | 
|    BrowserThreadImpl(BrowserThread::ID identifier,
 | 
|                      base::MessageLoop* message_loop);
 | 
|    virtual ~BrowserThreadImpl();
 | 
| 
 |