[Chromecast] Replace architecure-based conditionals with flag.

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
     # (DT_NEEDED) instead of using dlopen. This helps with automated
     # detection of ABI mismatches and prevents silent errors.
     'linux_link_pulseaudio%': 0,
     'conditions': [
       # Enable ALSA and Pulse for runtime selection.
-      ['(OS=="linux" or OS=="freebsd" or OS=="solaris") and (embedded!=1 or (chromecast==1 and target_arch!="arm"))', {
+      ['(OS=="linux" or OS=="freebsd" or OS=="solaris") and (chromecast==0 or is_cast_desktop_build==1)', {

[slan, 2015/12/15 04:15:24]

We can get rid of this as soon as we have a CMA backend for desktop. We want all
AudioOutputStreams going into CMA. Same for midi.gyp and
//media/media_options.gni

[halliwell, 2015/12/15 15:41:55]

What was the old "embedded!=1" condition for and why has that disappeared?

[slan, 2015/12/15 15:59:35]

'embedded' is synonymous with 'chromecast' (even on desktop....); we have
removed this flag in GN.

[halliwell, 2015/12/15 16:09:18]

Aha ... didn't know that :)  Thanks!

         # ALSA is always needed for Web MIDI even if the cras is enabled.
         'use_alsa%': 1,
         'conditions': [
           ['use_cras==1', {
             'use_pulseaudio%': 0,
           }, {
             'use_pulseaudio%': 1,
           }],
         ],
       }, {
@@ skipping 2092 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }