Web MIDI backend for Windows 10

media/media_options.gni

 # Copyright 2014 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.
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 declare_args() {
   # Allows distributions to link pulseaudio directly (DT_NEEDED) instead of
@@ skipping 26 matching lines @@
   # it only provides demuxing, and is only useful for AC3/EAC3 audio
   # pass-through to HDMI sink on Chromecast.
   enable_ac3_eac3_audio_demuxing = proprietary_codecs && is_chromecast
 
   enable_mse_mpeg2ts_stream_parser =
       (proprietary_codecs && is_chromecast) || use_libfuzzer || use_afl
 
   # Enable HEVC/H265 demuxing. Actual decoding must be provided by the
   # platform. Enable by default for Chromecast.
   enable_hevc_demuxing = proprietary_codecs && is_chromecast
+
+  # Enables MIDI implementation using WinRT APIs on Windows 10.
+  # TODO(shaochuan): Switch to using a runtime flag to choose between
+  # implementations.
+  midi_use_winrt = false

[Takashi Toyoshima, 2016/08/16 09:30:28]

I think it's fine to submit current CL with some TODOs left, and this could be
one of them.

In such case, this isn't a technical comment, but if you have this flag under
media/midi, you do not need to ask an extra owner's review for media/ :)

[Shao-Chuan Lee, 2016/08/18 08:48:56]

Done.

 }
 
 # Use a second declare_args() to pick up possible overrides of |use_cras|.
 declare_args() {
   # Enables runtime selection of PulseAudio library.
   use_pulseaudio = false
 
   # Enables runtime selection of ALSA library for audio.
   use_alsa = false
 
@@ skipping 59 matching lines @@
         "cdm",
         "renderer",
       ]
       mojo_media_host = "browser"
     } else {
       mojo_media_services = [ "video_decoder" ]
       mojo_media_host = "gpu"
     }
   }
 }