Use ScopedProcessInformation and other RAII types in sandbox.

sandbox/src/Wow64.cc

Index: sandbox/src/Wow64.cc
diff --git a/sandbox/src/Wow64.cc b/sandbox/src/Wow64.cc
index 60c63fd7b98d86b39b70e63d56f945c531c230a0..9f10a4b8a53e8c306c6b9dd15157d928af8c3105 100644
--- a/sandbox/src/Wow64.cc
+++ b/sandbox/src/Wow64.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -8,6 +8,7 @@
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/win/scoped_process_information.h"
 #include "base/win/windows_version.h"
 #include "sandbox/src/target_process.h"
 
@@ -156,18 +157,16 @@ bool Wow64::RunWowHelper(void* buffer) {
 
   STARTUPINFO startup_info = {0};
   startup_info.cb = sizeof(startup_info);
-  PROCESS_INFORMATION process_info;
+  base::win::ScopedProcessInformation process_info;
   if (!::CreateProcess(NULL, writable_command.get(), NULL, NULL, FALSE, 0, NULL,
-                       NULL, &startup_info, &process_info))
+                       NULL, &startup_info, process_info.Receive()))
     return false;
 
-  DWORD reason = ::WaitForSingleObject(process_info.hProcess, INFINITE);
+  DWORD reason = ::WaitForSingleObject(process_info.process_handle(), INFINITE);
 
   DWORD code;
-  bool ok = ::GetExitCodeProcess(process_info.hProcess, &code) ? true : false;
-
-  ::CloseHandle(process_info.hProcess);
-  ::CloseHandle(process_info.hThread);
+  bool ok =
+      ::GetExitCodeProcess(process_info.process_handle(), &code) ? true : false;
 
   if (WAIT_TIMEOUT == reason)
     return false;