Removed unnecessary call to initialize the COM library

chrome/browser/metrics/thread_watcher.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.
 
 // This file defines a WatchDog thread that monitors the responsiveness of other
 // browser threads like UI, IO, DB, FILE and CACHED threads. It also defines
 // ThreadWatcher class which performs health check on threads that would like to
 // be watched. This file also defines ThreadWatcherList class that has list of
 // all active ThreadWatcher objects.
 //
@@ skipping 437 matching lines @@
   // Note that even if the task is posted, there's no guarantee that it will
   // run, since the target thread may already have a Quit message in its queue.
   static bool PostTask(const tracked_objects::Location& from_here, Task* task);
   static bool PostDelayedTask(const tracked_objects::Location& from_here,
                               Task* task,
                               int64 delay_ms);
 
  protected:
   virtual void Init();
   virtual void CleanUp();
-  virtual void CleanUpAfterMessageLoopDestruction();
 
  private:
   static bool PostTaskHelper(
       const tracked_objects::Location& from_here,
       Task* task,
       int64 delay_ms);
 
   // This lock protects watchdog_thread_.
   static base::Lock lock_;
 
   static WatchDogThread* watchdog_thread_;  // The singleton of this class.
 
   DISALLOW_COPY_AND_ASSIGN(WatchDogThread);
 };
 
 // DISABLE_RUNNABLE_METHOD_REFCOUNT is a convenience macro for disabling
 // refcounting of ThreadWatcher and ThreadWatcherList classes.
 DISABLE_RUNNABLE_METHOD_REFCOUNT(ThreadWatcher);
 DISABLE_RUNNABLE_METHOD_REFCOUNT(ThreadWatcherList);
 
 #endif  // CHROME_BROWSER_METRICS_THREAD_WATCHER_H_