Cleanup: Remove unneeded browser_thread.h usage.

chrome/browser/net/chrome_net_log.h

 // Copyright (c) 2010 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 CHROME_BROWSER_NET_CHROME_NET_LOG_H_
 #define CHROME_BROWSER_NET_CHROME_NET_LOG_H_
 #pragma once
 
 #include <vector>
 
 #include "base/atomicops.h"
 #include "base/lock.h"
 #include "base/observer_list.h"
 #include "base/scoped_ptr.h"
-#include "chrome/browser/browser_thread.h"
+#include "base/time.h"
 #include "net/base/net_log.h"
 
 class LoadTimingObserver;
 class NetLogLogger;
 class PassiveLogCollector;
 
 // ChromeNetLog is an implementation of NetLog that dispatches network log
 // messages to a list of observers.
 //
 // All methods are thread safe, with the exception that no ChromeNetLog or
@@ skipping 129 matching lines @@
   scoped_ptr<LoadTimingObserver> load_timing_observer_;
   scoped_ptr<NetLogLogger> net_log_logger_;
 
   // |lock_| must be acquired whenever reading or writing to this.
   ObserverList<ThreadSafeObserver, true> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeNetLog);
 };
 
 #endif  // CHROME_BROWSER_NET_CHROME_NET_LOG_H_