Delete dead code related to the removed helper apps.

extensions/shell/app_shell.gyp

 # Copyright 2014 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.
 
 {
   'includes': [
     'app_shell.gypi',
   ],
   'variables': {
     # Product name is used for Mac bundle.
@@ skipping 161 matching lines @@
                 '${BUILT_PRODUCTS_DIR}/${CONTENTS_FOLDER_PATH}/Frameworks',
               ],
             },
             {
               # Modify the Info.plist as needed.
               'postbuild_name': 'Tweak Info.plist',
               'action': ['../../build/mac/tweak_info_plist.py',
                          '--scm=1',
                          '--version=<(app_shell_version)'],
             },
-            {
-              # This postbuild step is responsible for creating the following
-              # helpers:
-              #
-              # App Shell Helper EH.app and App Shell Helper NP.app are
-              # created from App Shell Helper.app.
-              #
-              # The EH helper is marked for an executable heap. The NP helper
-              # is marked for no PIE (ASLR).
-              'postbuild_name': 'Make More Helpers',
-              'action': [
-                '../../build/mac/make_more_helpers.sh',
-                'Frameworks',
-                '<(app_shell_product_name)',
-              ],
-            },
-            {
-              # Make sure there isn't any Objective-C in the shell's
-              # executable.
-              'postbuild_name': 'Verify No Objective-C',
-              'action': [
-                '../../build/mac/verify_no_objc.sh',
-              ],
-            },
           ],
         }],
       ],
     },
     {
       'target_name': 'app_shell_unittests',
       'type': 'executable',
       'dependencies': [
         'app_shell_lib',
         '<(DEPTH)/base/base.gyp:base',
@@ skipping 193 matching lines @@
               # targets.  In this case, --breakpad=0, --keystone=0, and --scm=0
               # are used because Breakpad, Keystone, and SCM keys are
               # never placed into the helper.
               'postbuild_name': 'Tweak Info.plist',
               'action': ['../../build/mac/tweak_info_plist.py',
                          '--breakpad=0',
                          '--keystone=0',
                          '--scm=0',
                          '--version=<(app_shell_version)'],
             },
-            {
-              # Make sure there isn't any Objective-C in the helper app's
-              # executable.
-              'postbuild_name': 'Verify No Objective-C',
-              'action': [
-                '../../build/mac/verify_no_objc.sh',
-              ],
-            },
           ],
         },  # target app_shell_helper
       ],
     }],  # OS=="mac"
     ['test_isolation_mode != "noop"', {
       'targets': [
         {
           'target_name': 'app_shell_unittests_run',
           'type': 'none',
           'dependencies': [
             'app_shell_unittests',
           ],
           'includes': [
             '../../build/isolate.gypi',
           ],
           'sources': [
             'app_shell_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }