Update NetLog to be thread safe.

chrome/browser/browser_process_impl.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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 #define CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 #include "base/non_thread_safe.h"
 #include "base/timer.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/download_status_updater.h"
 #include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/tab_contents/thumbnail_generator.h"
 #include "ipc/ipc_message.h"
 
+class ChromeNetLog;
 class CommandLine;
 class DebuggerWrapper;
 class FilePath;
 class NotificationService;
 class TabCloseableStateWatcher;
 
 // Real implementation of BrowserProcess that creates and returns the services.
 class BrowserProcessImpl : public BrowserProcess, public NonThreadSafe {
  public:
   explicit BrowserProcessImpl(const CommandLine& command_line);
@@ skipping 167 matching lines @@
   // Runs on the file thread and stats the inspector's directory, filling in
   // have_inspector_files_ with the result.
   void DoInspectorFilesCheck();
   // Our best estimate about the existence of the inspector directory.
   bool have_inspector_files_;
 
   // Ensures that the observers of plugin/print disable/enable state
   // notifications are properly added and removed.
   PrefChangeRegistrar pref_change_registrar_;
 
+  // Lives here so can safely log events on shutdown.
+  scoped_ptr<ChromeNetLog> net_log_;
+
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
   base::RepeatingTimer<BrowserProcessImpl> autoupdate_timer_;
 
   // Gets called by autoupdate timer to see if browser needs restart and can be
   // restarted, and if that's the case, restarts the browser.
   void OnAutoupdateTimer();
   bool CanAutorestartForUpdate() const;
   void RestartPersistentInstance();
 #endif  // defined(OS_WIN) || defined(OS_LINUX)
 
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H_