Reland of http://crrev.com/241548.

chrome_elf/version_assembly_manifest_action.gypi

 # 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.
 
 # This file contains an action which can be used to construct a manifest file
 # with the same name as the version directory so that chrome.exe identifies the
 # version directory as an assembly. This will be copied over to the version
 # directory by the installer script.
 
 # To use this the following variables need to be defined:
@@ skipping 16 matching lines @@
   'outputs': [
     '<(PRODUCT_DIR)/<(version_full).manifest',
   ],
   'action': [
     'python', '<(version_py_path)',
     '-f', '<(version_path)',
     '<(template_input_path)',
     '<@(_outputs)',
   ],
   'message': 'Generating <@(_outputs)',
-}
+}