Revert 129627 - Add a sandbox API for broker handle duplication

sandbox/src/sandbox.h

Index: sandbox/src/sandbox.h
===================================================================
--- sandbox/src/sandbox.h	(revision 129628)
+++ sandbox/src/sandbox.h	(working copy)
@@ -1,4 +1,4 @@
-// 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.
 
@@ -126,20 +126,6 @@
   // 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