Made setting lowbox token a warning.

sandbox/win/src/sandbox.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.
 
 // 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
@@ skipping 49 matching lines @@
 
   // Creates a new target (child process) in a suspended state.
   // Parameters:
   //   exe_path: This is the full path to the target binary. This parameter
   //   can be null and in this case the exe path must be the first argument
   //   of the command_line.
   //   command_line: The arguments to be passed as command line to the new
   //   process. This can be null if the exe_path parameter is not null.
   //   policy: This is the pointer to the policy object for the sandbox to
   //   be created.
+  //   last_warning: The argument will contain an indication on whether
+  //   the process security was initialized completely, Only set if the
+  //   process can be used without a serious compromise in security.
+  //   last_error: If an error or warning is returned from this method this
+  //   parameter will hold the last Win32 error value.
   //   target: returns the resulting target process information such as process
   //   handle and PID just as if CreateProcess() had been called. The caller is
   //   responsible for closing the handles returned in this structure.
   // Returns:
   //   ALL_OK if successful. All other return values imply failure.
   virtual ResultCode SpawnTarget(const wchar_t* exe_path,
                                  const wchar_t* command_line,
                                  TargetPolicy* policy,
+                                 ResultCode* last_warning,
+                                 DWORD* last_error,
                                  PROCESS_INFORMATION* target) = 0;
 
   // This call blocks (waits) for all the targets to terminate.
   // 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 WaitForAllTargets() = 0;
 };
 
@@ skipping 36 matching lines @@
   // 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;
 };
 
 }  // namespace sandbox
 
 
 #endif  // SANDBOX_WIN_SRC_SANDBOX_H_