Remove unused WEBKIT_DEPRECATED thread

content/browser/browser_thread_impl.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_BROWSER_BROWSER_THREAD_IMPL_H_
 #define CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_
 
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 24 matching lines @@
  private:
   // We implement all the functionality of the public BrowserThread
   // functions, but state is stored in the BrowserThreadImpl to keep
   // the API cleaner. Therefore make BrowserThread a friend class.
   friend class BrowserThread;
 
   // The following are unique function names that makes it possible to tell
   // the thread id from the callstack alone in crash dumps.
   void UIThreadRun(base::MessageLoop* message_loop);
   void DBThreadRun(base::MessageLoop* message_loop);
-  void WebKitThreadRun(base::MessageLoop* message_loop);
   void FileThreadRun(base::MessageLoop* message_loop);
   void FileUserBlockingThreadRun(base::MessageLoop* message_loop);
   void ProcessLauncherThreadRun(base::MessageLoop* message_loop);
   void CacheThreadRun(base::MessageLoop* message_loop);
   void IOThreadRun(base::MessageLoop* message_loop);
 
   static bool PostTaskHelper(
       BrowserThread::ID identifier,
       const tracked_objects::Location& from_here,
       const base::Closure& task,
       base::TimeDelta delay,
       bool nestable);
 
   // Common initialization code for the constructors.
   void Initialize();
 
   // For testing.
   friend class ContentTestSuiteBaseListener;
   static void FlushThreadPoolHelper();
 
   // The identifier of this thread.  Only one thread can exist with a given
   // identifier at a given time.
   ID identifier_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_THREAD_IMPL_H_