Rework build/mac/tweak_info_plist.py to not rely on environment variables.

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 154 matching lines @@
               'action': [
                 '../../build/mac/copy_framework_unversioned.sh',
                 '${BUILT_PRODUCTS_DIR}/<(app_shell_product_name) Framework.framework',
                 '${BUILT_PRODUCTS_DIR}/${CONTENTS_FOLDER_PATH}/Frameworks',
               ],
             },
             {
               # Modify the Info.plist as needed.
               'postbuild_name': 'Tweak Info.plist',
               'action': ['../../build/mac/tweak_info_plist.py',
+                         '--plist=${TARGET_BUILD_DIR}/${INFOPLIST_PATH}',
                          '--scm=1',
                          '--version=<(app_shell_version)'],
             },
           ],
         }],
       ],
     },
     {
       'target_name': 'app_shell_unittests',
       'type': 'executable',
@@ skipping 115 matching lines @@
             {
               # Modify the Info.plist as needed.  The script explains why
               # this is needed.  This is also done in the chrome target.
               # The framework needs the Breakpad keys if this feature is
               # enabled.  It does not need the Keystone keys; these always
               # come from the outer application bundle.  The framework
               # doesn't currently use the SCM keys for anything,
               # but this seems like a really good place to store them.
               'postbuild_name': 'Tweak Info.plist',
               'action': ['../../build/mac/tweak_info_plist.py',
+                         '--plist=${TARGET_BUILD_DIR}/${INFOPLIST_PATH}',
                          '--breakpad=1',
                          '--keystone=0',
                          '--scm=1',
                          '--version=<(app_shell_version)',
                          '--branding=<(app_shell_product_name)'],
             },
           ],
           'conditions': [
             ['icu_use_data_file_flag==1', {
               'mac_bundle_resources': [
@@ skipping 52 matching lines @@
               ],
             },
             {
               # Modify the Info.plist as needed.  The script explains why this
               # is needed.  This is also done in the chrome and chrome_dll
               # targets.  In this case, --breakpad=0, --keystone=0, and --scm=0
               # are used because Breakpad, Keystone, and SCM keys are
               # never placed into the helper.
               'postbuild_name': 'Tweak Info.plist',
               'action': ['../../build/mac/tweak_info_plist.py',
+                         '--plist=${TARGET_BUILD_DIR}/${INFOPLIST_PATH}',
                          '--breakpad=0',
                          '--keystone=0',
                          '--scm=0',
                          '--version=<(app_shell_version)'],
             },
           ],
         },  # 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',
           ],
         },
       ],
     }],
   ],
 }