H264 HW encode using VideoToolbox

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 cras (ChromeOS audio) library.
     'use_cras%': 0,
     # Option e.g. for Linux distributions to link pulseaudio directly
@@ skipping 319 matching lines @@
         'base/loopback_audio_converter.h',
         'base/mac/avfoundation_glue.h',
         'base/mac/avfoundation_glue.mm',
         'base/mac/coremedia_glue.h',
         'base/mac/coremedia_glue.mm',
         'base/mac/corevideo_glue.h',
         'base/mac/video_frame_mac.cc',
         'base/mac/video_frame_mac.h',
         'base/mac/videotoolbox_glue.h',
         'base/mac/videotoolbox_glue.mm',
+        'base/mac/videotoolbox_helpers.cc',

[miu, 2016/02/04 22:23:20]

These should only be built and linked on MacOS or iOS, right?  The BUILD.gn file
seems to do this, so maybe these should be under the corresponding GYP target?

+        'base/mac/videotoolbox_helpers.h',
         'base/media.cc',
         'base/media.h',
         'base/media_client.cc',
         'base/media_client.h',
         'base/media_file_checker.cc',
         'base/media_file_checker.h',
         'base/media_keys.cc',
         'base/media_keys.h',
         'base/media_log.cc',
         'base/media_log.h',
@@ skipping 1707 matching lines @@
             '..',
           ],
           'sources': [
             'base/mac/coremedia_glue.h',
             'base/mac/coremedia_glue.mm',
             'base/mac/corevideo_glue.h',
             'base/mac/video_frame_mac.cc',
             'base/mac/video_frame_mac.h',
             'base/mac/videotoolbox_glue.h',
             'base/mac/videotoolbox_glue.mm',
+            'base/mac/videotoolbox_helpers.cc',
+            'base/mac/videotoolbox_helpers.h',
             'base/simd/convert_rgb_to_yuv.h',
             'base/simd/convert_rgb_to_yuv_c.cc',
             'base/simd/convert_yuv_to_rgb.h',
             'base/simd/convert_yuv_to_rgb_c.cc',
             'base/simd/filter_yuv.h',
             'base/simd/filter_yuv_c.cc',
             'base/video_frame.cc',
             'base/video_frame.h',
             'base/video_frame_metadata.cc',
             'base/video_frame_metadata.h',
@@ skipping 66 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }