update obsolete code.google.com documentation links

components/nacl/loader/nacl_main_platform_delegate_linux.cc

 // Copyright 2013 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.
 
 #include "components/nacl/loader/nacl_main_platform_delegate.h"
 
 void NaClMainPlatformDelegate::EnableSandbox(
     const content::MainFunctionParams& parameters) {
   // The setuid sandbox is started in the zygote process: zygote_main_linux.cc
-  // http://code.google.com/p/chromium/wiki/LinuxSUIDSandbox
+  // https://chromium.googlesource.com/chromium/src/+/master/docs/linux_suid_sandbox.md
   //
   // The seccomp sandbox is started in the renderer.
   // http://code.google.com/p/seccompsandbox/
   // seccomp is currently disabled for nacl.
   // http://code.google.com/p/chromium/issues/detail?id=59423
   // See the code in chrome/renderer/renderer_main_platform_delegate_linux.cc
   // for how to turn seccomp on.
   //
   // The seccomp sandbox should not be enabled for Native Client until
   // all of these issues are fixed:
   // http://code.google.com/p/nativeclient/issues/list?q=label:Seccomp
   // At best, NaCl will not work.  At worst, enabling the seccomp sandbox
   // could create a hole in the NaCl sandbox.
 }