Switched Cast builder to use GN.

tools/mb/mb_config.pyl

 # Copyright 2015 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.
 
 {
   # This is the list of configs that you can pass to mb; each config
   # represents a particular combination of GYP_DEFINES/gn args that
   # we must support. A given config *may* be platform-specific but
   # is not necessarily so (i.e., we might have mac, win, and linux
   # bots all using the 'gn_release_bot' config).
   'configs': {
     'android_cast_gyp_debug_static_bot': ['android', 'cast', 'gyp', 'debug_static_bot'],
     'android_clang_asan_gyp_debug_bot': ['android', 'clang', 'asan', 'gyp', 'debug_bot'],\
     'android_gn_debug_bot': ['android', 'gn', 'debug_bot'],
     'android_gn_release_bot': ['android', 'gn', 'release_bot'],
     'android_gn_release_trybot': ['android', 'gn', 'release_trybot'],
     'android_gyp_debug_static_bot': ['android', 'gyp', 'debug_static_bot'],
     'android_gyp_debug_static_bot_arm64': ['android', 'gyp', 'debug_static_bot', 'arm64'],
     'android_gyp_debug_static_bot_mipsel': ['android', 'gyp', 'debug_static_bot', 'mipsel'],
     'android_gyp_debug_static_bot_x64': ['android', 'gyp', 'debug_static_bot', 'x64'],
     'android_gyp_debug_static_bot_x86': ['android', 'gyp', 'debug_static_bot', 'x86'],
     'android_gyp_release_bot': ['android', 'gyp', 'release_bot'],
     'android_gyp_release_bot_minimal_symbols': ['android', 'gyp', 'release_bot', 'minimal_symbols'],
-    'cast_gyp_release_bot': ['cast', 'gyp', 'release_bot'],
-    'cast_gyp_release_trybot': ['cast', 'gyp', 'release_trybot'],
+    'cast_gn_release_bot': ['cast', 'gn', 'release_bot'],
+    'cast_gn_release_trybot': ['cast', 'gn', 'release_trybot'],
     'chromeos_gn_debug_bot': ['chromeos', 'gn', 'debug_bot'],
     'chromeos_ozone_gn_release_bot': ['chromeos', 'ozone', 'gn', 'release_bot'],
     'chromeos_ozone_gn_release_trybot': ['chromeos', 'ozone', 'gn', 'release_trybot'],
     'dev_gn_debug': ['gn', 'debug', 'shared', 'full_symbols'],
     'dev_gn_release': ['gn', 'release', 'shared'],
     'dev_gyp_debug': ['gyp', 'debug', 'shared', 'full_symbols'],
     'dev_gyp_release': ['gyp', 'release', 'shared'],
     'embedded_gyp_debug_bot': ['embedded', 'gyp', 'debug_bot'],
 
     # This is the "deployment" config for the blimp builds. Currently
@@ skipping 146 matching lines @@
       'gn_args': 'target_cpu="arm64"',
       'gyp_defines': 'target_arch=arm64',
     },
 
     'asan': {
       'gn_args': 'is_asan=true',
       'gyp_defines': 'asan=1',
     },
 
     'cast': {
-      'gn_args': '# TODO: Need the GN equivalents for a Chromecast build.',
+      'gn_args': 'is_chromecast=true',
       'gyp_defines': 'chromecast=1',
     },
 
     'cfi': {
       'gn_args': 'is_cfi=true',
       'gyp_defines': 'cfi_vptr=1',
     },
 
     'chromeos': {
       'gn_args': 'target_os="chromeos"',
@@ skipping 256 matching lines @@
     'chromium.linux': {
       'Linux Builder': 'swarming_gn_release_bot',
       'Linux Tests': 'none',
       'Linux Builder (dbg)(32)': 'swarming_gyp_debug_bot_no_symbols_x86',
       'Linux Tests (dbg)(1)(32)': 'none',
       'Linux Builder (dbg)': 'swarming_gn_debug_bot',
       'Linux Tests (dbg)(1)': 'none',
       'Linux GN': 'gn_release_bot',
       'Linux GN Clobber': 'gn_release_bot',
       'Linux GN (dbg)': 'gn_debug_bot',
-      'Cast Linux': 'cast_gyp_release_bot',
+      'Cast Linux': 'cast_gn_release_bot',
       'Android Arm64 Builder (dbg)': 'android_gyp_debug_static_bot_arm64',
       'Android Builder (dbg)': 'android_gyp_debug_static_bot',
       'Android Tests (dbg)': 'android_gyp_debug_static_bot',
       'Android Builder': 'android_gyp_release_bot',
       'Android Tests': 'android_gyp_release_bot',
       'Android Clang Builder (dbg)': 'android_clang_asan_gyp_debug_bot',
       'Android GN': 'android_gn_release_bot',
       'Android GN (dbg)': 'android_gn_debug_bot',
       'Cast Android (dbg)': 'android_cast_gyp_debug_static_bot',
     },
@@ skipping 155 matching lines @@
       'linux_chromium_gn_chromeos_dbg': 'chromeos_gn_debug_bot',
       'linux_chromium_msan_rel_ng': 'swarming_msan_gyp_release_trybot',
       'linux_chromium_tsan_rel_ng': 'swarming_tsan_gyp_release_trybot',
       'linux_chromium_practice_rel_ng': 'gyp_release_trybot',
       'linux_arm': 'swarming_gyp_release_trybot_arm',
       'linux_chromium_compile_dbg_32_ng': 'swarming_gyp_debug_trybot_x86',
       'linux_chromium_dbg_32_ng': 'swarming_gyp_debug_trybot_x86',
       'linux_chromium_archive_rel_ng': 'noswarming_gn_release_bot',
       'linux_chromium_clobber_rel_ng': 'gyp_release_trybot',
       'linux_chromium_gn_upload': 'gn_linux_upload',
-      'cast_shell_linux': 'cast_gyp_release_trybot',
+      'cast_shell_linux': 'cast_gn_release_trybot',
       'linux_deterministic': 'swarming_deterministic_gyp_release_bot',
       'linux_ecs_ozone': 'embedded_gyp_debug_bot',
     },
     'tryserver.chromium.mac': {
       'mac_chromium_gn_dbg': 'gn_debug_static_bot',
       'mac_chromium_gn_rel': 'gn_release_trybot',
       'mac_chromium_gn_upload': 'gn_release_bot',
     },
     'tryserver.chromium.perf': {
       'android_perf_bisect_builder': 'gyp_official_goma_minimal_symbols_android',
@@ skipping 33 matching lines @@
       'win8_chromium_gn_upload': 'gn_release_bot_minimal_symbols_x86',
       'win_clang_x64_dbg': 'win_clang_debug_bot',
     },
     'tryserver.v8': {
       'v8_linux_chromium_gn_rel': 'gn_release_trybot',
       'v8_android_chromium_gn_dbg': 'android_gn_debug_bot',
       'v8_linux_blink_rel': 'swarming_gn_release_trybot_minimal_symbols_x64',
     },
   },
 }