Add a cast audio bot.

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 a .pyl, or "Python Literal", file. You can treat it just like a
 # .json file, with the following exceptions:
 # * all keys must be quoted (use single quotes, please);
 # * comments are allowed, using '#' syntax; and
 # * trailing commas are allowed.
 
@@ skipping 248 matching lines @@
 
     'chromium.linux': {
       'Android Arm64 Builder (dbg)': 'android_debug_static_bot_arm64',
       'Android Builder (dbg)': 'android_debug_static_bot',
       'Android Builder': 'android_release_bot_minimal_symbols',
       'Android Clang Builder (dbg)': 'android_clang_asan_errorprone_findbugs_debug_bot_minimal_symbols',
       'Android Tests (dbg)': 'android_debug_static_bot',
       'Android Tests': 'android_release_bot_minimal_symbols',
       'Cast Android (dbg)': 'android_cast_debug_static_bot',
       'Cast Linux': 'cast_release_bot',
+      'Cast Audio Linux': 'cast_audio_release_bot',
       'Linux Builder (dbg)': 'debug_bot',
       'Linux Builder (dbg)(32)': 'debug_bot_x86',
       'Linux Builder': 'release_bot',
       'Deterministic Linux': 'release_bot',
     },
 
     'chromium.lkgr': {
       'ASAN Debug': 'asan_lsan_edge_debug_bot',
       'ASAN Release Media': 'asan_lsan_edge_fuzzer_v8_heap_chromeos_codecs_release_bot',
       'ASAN Release': 'asan_lsan_edge_fuzzer_v8_heap_release_bot',
@@ skipping 252 matching lines @@
       'win_angle_dbg_ng': 'gpu_tests_deqp_gles_debug_trybot_x86',
       'win_angle_rel_ng': 'gpu_tests_deqp_gles_release_trybot_x86',
       'win_angle_x64_dbg_ng': 'gpu_tests_deqp_gles_debug_trybot',
       'win_angle_x64_rel_ng': 'gpu_tests_deqp_gles_release_trybot',
     },
 
     'tryserver.chromium.linux': {
       'Chromium Linux Codesearch Builder': 'codesearch',
       'ChromiumOS Codesearch Builder': 'codesearch',
       'cast_shell_linux': 'cast_release_trybot',
+      'cast_shell_audio_linux': 'cast_audio_release_trybot',
       'chromeos_amd64-generic_chromium_compile_only_ng': 'cros_chrome_sdk',
       'chromeos_daisy_chromium_compile_only_ng': 'cros_chrome_sdk',
       'chromeos_x86-generic_chromium_compile_only_ng': 'cros_chrome_sdk',
       'closure_compilation': 'closure_compilation',
       'linux_arm': 'release_trybot_arm',
       'linux_chromium_archive_rel_ng': 'release_bot',
       'linux_chromium_asan_rel_ng': 'asan_lsan_release_trybot',
       'linux_chromium_browser_side_navigation_rel': 'release_trybot',
       'linux_chromium_cfi_rel_ng': 'cfi_full_release_static_dcheck_always_on',
       'linux_chromium_chromeos_asan_rel_ng': 'asan_lsan_chromeos_release_trybot',
@@ skipping 423 matching lines @@
     ],
 
     'cast_release_bot': [
       'cast', 'release_bot',
     ],
 
     'cast_release_trybot': [
       'cast', 'release_trybot',
     ],
 
+    'cast_audio_release_bot': [
+      'cast', 'cast_audio', 'release_bot',
+    ],
+
+    'cast_audio_release_trybot': [
+      'cast', 'cast_audio', 'release_trybot',
+    ],
+
     'cfi_full_cfi_diag_release_static': [
       'cfi_full', 'cfi_diag', 'release', 'static',
     ],
 
     'cfi_full_clang_tot_release_static': [
       'cfi_full', 'clang_tot', 'release', 'static',
     ],
 
     'cfi_full_release_static': [
       'cfi_full', 'release', 'static',
@@ skipping 576 matching lines @@
     },
 
     'ffmpeg_branding_chromeos': {
       'gn_args': 'ffmpeg_branding="ChromeOS"',
     },
 
     'cast': {
       'gn_args': 'is_chromecast=true',
     },
 
+    'cast_audio': {
+      'gn_args': 'is_cast_audio_only=true enable_webrtc=false'
+    },
+
     'cfi': {
       'gn_args': 'is_cfi=true',
     },
 
     'cfi_full': {
       'gn_args': 'use_cfi_cast=true',
       'mixins': ['cfi'],
     },
 
     'cfi_diag': {
@@ skipping 328 matching lines @@
 
     'x64': {
       'gn_args': 'target_cpu="x64"',
     },
 
     'x86': {
       'gn_args': 'target_cpu="x86"',
     },
   },
 }