Add download_file_types.proto with ascii->binary conversion, as a resource.

chrome/chrome_common.gypi

 # Copyright (c) 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': {
     # File lists shared with GN build.
     'chrome_common_sources': [
       'common/all_messages.h',
       'common/attrition_experiments.h',
@@ skipping 604 matching lines @@
           ],
         }],
         ['OS=="win"', {
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [4267, ],
         }],
       ],
     },
     {
       # Protobuf compiler / generator for the safebrowsing client
-      # model proto and the client-side detection (csd) request
-      # protocol buffer.
+      # model proto, the client-side detection (csd) request
+      # proto, and the download file types proto.
 
       # GN version: //chrome/common/safe_browsing:proto
       'target_name': 'safe_browsing_proto',
       'type': 'static_library',
       'sources': [
         'common/safe_browsing/client_model.proto',
         'common/safe_browsing/crx_info.proto',
-        'common/safe_browsing/csd.proto'
+        'common/safe_browsing/csd.proto',
+        'common/safe_browsing/download_file_types.proto',
       ],
       'variables': {
         'proto_in_dir': 'common/safe_browsing',
         'proto_out_dir': 'chrome/common/safe_browsing',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
     {
       # GN version: //chrome/common:mojo_bindings
       'target_name': 'common_mojo_bindings',
       'type': 'static_library',
       'includes': [
         '../mojo/mojom_bindings_generator.gypi'
       ],
       'sources': [
         'common/image_decoder.mojom',
         'common/resource_usage_reporter.mojom',
       ],
       'dependencies': [
         '../mojo/mojo_public.gyp:mojo_cpp_bindings',
         '../skia/skia.gyp:skia_mojo',
       ],
     },
   ],
 }