Don't use PathService for the location of nacl_helper and nacl_helper_bootstrap

chrome/nacl.gypi

 # 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.
 
 {
   'include': [
     '../native_client/build/untrusted.gypi',
   ],
   'target_defaults': {
     'variables': {
@@ skipping 36 matching lines @@
               '<(DEPTH)/third_party/wtl/include',
             ],
           },],
           ['OS=="linux"', {
             'defines': [
               '__STDC_LIMIT_MACROS=1',
             ],
             'sources': [
               'app/nacl_fork_delegate_linux.cc',
               'app/nacl_fork_delegate_linux.h',
+              'common/nacl_paths.cc',
+              'common/nacl_paths.h',
             ],
           },],
         ],
       }],
     ],
   },
   'conditions': [
     ['disable_nacl!=1', {
       'targets': [
         {
@@ skipping 140 matching lines @@
               'target_name': 'nacl_win64',
               'type': 'none',
               'sources': [],
             },
           ],
         }],
       ],
     }],
   ],
 }