Disable size_t to int conversion data loss warnings in media win64 builds

media/media.gyp

 # Copyright (c) 2012 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,
     # Override to dynamically link the PulseAudio library.
     'use_pulseaudio%': 0,
     # Override to dynamically link the cras (ChromeOS audio) library.
@@ skipping 651 matching lines @@
             'msvs_settings': {
               'VCLinkerTool': {
                 'DelayLoadDLLs': [
                   'mf.dll',
                   'mfplat.dll',
                   'mfreadwrite.dll',
                 ],
               },
             },
           },
+          # TODO(wolenetz): crbug.com/171009 fix size_t to int truncations
+          # in win64.
+          'conditions': [
+            ['target_arch == "x64"', {
+              'msvs_disabled_warnings': [ 4267, ],
+            }],
+          ],
         }],
         ['proprietary_codecs==1 or branding=="Chrome"', {
           'sources': [
             'mp4/aac.cc',
             'mp4/aac.h',
             'mp4/avc.cc',
             'mp4/avc.h',
             'mp4/box_definitions.cc',
             'mp4/box_definitions.h',
             'mp4/box_reader.cc',
@@ skipping 774 matching lines @@
           ],
           'sources': [
             'video/capture/screen/differ_block_sse2.cc',
             'video/capture/screen/differ_block_sse2.h',
           ],
         }, # end of target differ_block_sse2
       ],
     }],
   ],
 }