Remove BrowserThread::UnsafeGetMessageLoopForThread()

content/public/browser/browser_thread.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_
 #define CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 204 matching lines @@
 
   // If the current message loop is one of the known threads, returns true and
   // sets identifier to its ID.  Otherwise returns false.
   static bool GetCurrentThreadIdentifier(ID* identifier) WARN_UNUSED_RESULT;
 
   // Callers can hold on to a refcounted task runner beyond the lifetime
   // of the thread.
   static scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunnerForThread(
       ID identifier);
 
-  // Returns a pointer to the thread's message loop, which will become
-  // invalid during shutdown, so you probably shouldn't hold onto it.
-  //
-  // This must not be called before the thread is started, or after
-  // the thread is stopped, or it will DCHECK.
-  //
-  // Ownership remains with the BrowserThread implementation, so you
-  // must not delete the pointer.
-  static base::MessageLoop* UnsafeGetMessageLoopForThread(ID identifier);
-
   // Sets the delegate for the specified BrowserThread.
   //
   // Only one delegate may be registered at a time.  Delegates may be
   // unregistered by providing a nullptr pointer.
   //
   // If the caller unregisters a delegate before CleanUp has been
   // called, it must perform its own locking to ensure the delegate is
   // not deleted while unregistering.
   static void SetDelegate(ID identifier, BrowserThreadDelegate* delegate);
 
@@ skipping 53 matching lines @@
  private:
   friend class BrowserThreadImpl;
 
   BrowserThread() {}
   DISALLOW_COPY_AND_ASSIGN(BrowserThread);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_