Revert 129627 - Add a sandbox API for broker handle duplication

sandbox/src/sandbox.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// 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.
 
 // Sandbox is a sandbox library for windows processes. Use when you want a
 // 'privileged' process and a 'locked down process' to interact with.
 // The privileged process is called the broker and it is started by external
 // means (such as the user starting it). The 'sandboxed' process is called the
 // target and it is started by the broker. There can be many target processes
 // started by a single broker process. This library provides facilities
 // for both the broker and the target.
@@ skipping 107 matching lines @@
 
   // Discards the impersonation token and uses the lower token, call before
   // processing any untrusted data or running third-party code. If this call
   // fails the current process could be terminated immediately.
   virtual void LowerToken() = 0;
 
   // Returns the ProcessState object. Through that object it's possible to have
   // information about the current state of the process, such as whether
   // LowerToken has been called or not.
   virtual ProcessState* GetState() = 0;
-
-  // Requests the broker to duplicate the supplied handle into the target
-  // process. The target process must be an active sandbox child process
-  // and the source process must have a corresponding policy allowing
-  // handle duplication for this object type.
-  // Returns:
-  //   ALL_OK if successful. All other return values imply failure.
-  //   If the return is ERROR_GENERIC, you can call ::GetLastError() to get
-  //   more information.
-  virtual ResultCode DuplicateHandle(HANDLE source_handle,
-                                     DWORD target_process_id,
-                                     HANDLE* target_handle,
-                                     DWORD desired_access,
-                                     DWORD options) = 0;
 };
 
 }  // namespace sandbox
 
 
 #endif  // SANDBOX_SRC_SANDBOX_H__