Validate hash_sha256 checksum on .crx update.

extensions/extensions.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 643 matching lines @@
         'browser/content_hash_reader.h',
         'browser/content_hash_tree.cc',
         'browser/content_hash_tree.h',
         'browser/content_verifier.cc',
         'browser/content_verifier.h',
         'browser/content_verifier_delegate.h',
         'browser/content_verifier_io_data.cc',
         'browser/content_verifier_io_data.h',
         'browser/content_verify_job.cc',
         'browser/content_verify_job.h',
+        'browser/crx_file_info.cc',
+        'browser/crx_file_info.h',
         'browser/error_map.cc',
         'browser/error_map.h',
         'browser/event_listener_map.cc',
         'browser/event_listener_map.h',
         'browser/event_router.cc',
         'browser/event_router.h',
         'browser/extension_host.cc',
         'browser/extension_host.h',
         'browser/extension_host_delegate.h',
         'browser/extension_host_observer.h',
@@ skipping 567 matching lines @@
               '<(SHARED_INTERMEDIATE_DIR)/blink/devtools_resources.pak',
             ],
             'pak_output': '<(PRODUCT_DIR)/extensions_shell_and_test.pak',
           },
           'includes': [ '../build/repack_action.gypi' ],
         },
       ],
     },
   ]
 }