Use nacl_helper_bootstrap from native_client repository

chrome/chrome_exe.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'chrome',
       'type': 'executable',
       'mac_bundle': 1,
@@ skipping 400 matching lines @@
             # file decide what to do on a per-OS basis; on Mac, internal plugins
             # go inside the framework, so this dependency is in chrome_dll.gypi.
             '../third_party/adobe/flash/flash_player.gyp:flash_player',
           ],
         }],
         ['OS=="linux"', {
           'conditions': [
             # For now, do not build nacl_helper when disable_nacl=1
             ['disable_nacl!=1', {
               'dependencies': [
-                'nacl_helper_bootstrap',
+                '../native_client/src/trusted/service_runtime/linux/nacl_bootstrap.gyp:nacl_helper_bootstrap',
                 'nacl_helper',
                 ],
             }],
           ],
         }],
         ['OS=="mac"', {
           'dependencies': [
             # On Mac, make sure we've built chrome_dll, which contains all of
             # the library code with Chromium functionality.
             'chrome_dll',
@@ skipping 114 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }