Remove shared worker process related codes.

content/public/common/sandbox_type_mac.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_COMMON_SANDBOX_TYPE_MAC_H_
 #define CONTENT_PUBLIC_COMMON_SANDBOX_TYPE_MAC_H_
 
 namespace content {
 
 // Defines the Mac sandbox types known within content. Embedders can add
 // additional sandbox types with IDs starting with SANDBOX_TYPE_AFTER_LAST_TYPE.
 
 enum SandboxType {
   // Not a valid sandbox type.
   SANDBOX_TYPE_INVALID = -1,
 
   SANDBOX_TYPE_FIRST_TYPE = 0,  // Placeholder to ease iteration.
 
   SANDBOX_TYPE_RENDERER = SANDBOX_TYPE_FIRST_TYPE,
 
-  // The worker process uses the most restrictive sandbox which has almost
-  // *everything* locked down. Only a couple of /System/Library/ paths and
-  // some other very basic operations (e.g., reading metadata to allow
-  // following symlinks) are permitted.
-  SANDBOX_TYPE_WORKER,
-
   // Utility process is as restrictive as the worker process except full
   // access is allowed to one configurable directory.
   SANDBOX_TYPE_UTILITY,
 
   // GPU process.
   SANDBOX_TYPE_GPU,
 
   // The PPAPI plugin process.
   SANDBOX_TYPE_PPAPI,
 
   SANDBOX_TYPE_AFTER_LAST_TYPE,  // Placeholder to ease iteration.
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_SANDBOX_TYPE_MAC_H_