Remove unused WEBKIT_DEPRECATED thread

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/basictypes.h"
@@ skipping 46 matching lines @@
   // An enumeration of the well-known threads.
   // NOTE: threads must be listed in the order of their life-time, with each
   // thread outliving every other thread below it.
   enum ID {
     // The main thread in the browser.
     UI,
 
     // This is the thread that interacts with the database.
     DB,
 
-    // This is the "main" thread for WebKit within the browser process when
-    // NOT in --single-process mode.
-    // Deprecated: Do not design new code to use this thread; see
-    // http://crbug.com/106839
-    WEBKIT_DEPRECATED,
-
     // This is the thread that interacts with the file system.
     FILE,
 
     // Used for file system operations that block user interactions.
     // Responsiveness of this thread affect users.
     FILE_USER_BLOCKING,
 
     // Used to launch and terminate Chrome processes.
     PROCESS_LAUNCHER,
 
@@ skipping 188 matching lines @@
  private:
   friend class BrowserThreadImpl;
 
   BrowserThread() {}
   DISALLOW_COPY_AND_ASSIGN(BrowserThread);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_