Add new accessibility_unittests target to "try" and "fyi"

masters/master.tryserver.chromium/master.cfg

Index: masters/master.tryserver.chromium/master.cfg
diff --git a/masters/master.tryserver.chromium/master.cfg b/masters/master.tryserver.chromium/master.cfg
index 11fcbf50e35dbed63ea25ab2e1a8d7dede1724f3..820444d9f8b28c97979d8233b4a43361280915ba 100644
--- a/masters/master.tryserver.chromium/master.cfg
+++ b/masters/master.tryserver.chromium/master.cfg
@@ -120,6 +120,7 @@ def NextJob(builder, requests):
 
 # Tests that are single-machine shard-safe.
 sharded_tests = [
+  'accessibility_unittests',
   'aura_unittests',
   'base_unittests',
   'browser_tests',
@@ -356,6 +357,7 @@ linux_tests = [
 # TODO(maruel): Having a different name to specify the tests to run is a tad
 # insane. Should be fixed separately.
 linux_tests_full_name = [
+  'accessibility_unittests',
   'base_unittests',
   'browser_tests',
   'cacheinvalidation_unittests',
@@ -417,6 +419,7 @@ b_linux_futura = CreateBuilder(
     slavebuilddir='linux_aura')
 
 linux_aura_tests = [
+  'accessibility_unittests_br',
   'app_list_unittests_br',
   'aura_br',
   'base_unittests_br',
@@ -449,6 +452,7 @@ linux_aura_tests = [
 ]
 
 linux_aura_options = [
+  'accessibility_unittests',
   'app_list_unittests',
   'aura_builder',
   'base_unittests',
@@ -809,6 +813,7 @@ b_win_x64_rel = CreateBuilder(
 
 # Tests that are single-machine shard-safe on Linux ChromeOS
 linux_chromeos_sharded = [
+  'accessibility_unittests',
   'base_unittests',
   'browser_tests',
   'buildrunner_tests',
@@ -819,6 +824,7 @@ linux_chromeos_sharded = [
 ]
 
 linux_chromeos_tests= [
+  ('accessibility_unittests_br', 'accessibility_unittests'),
   ('app_list_unittests_br', 'app_list_unittests'),
   ('ash_unittests_br', 'aura_builder'),
   ('aura_br', 'aura_builder'),
@@ -1146,6 +1152,7 @@ b_valgrind_linux = {
       target='Release',
       options=[
         '--compiler=goma',
+        'accessibility_unittests',
         'blink_tests',
         'base_unittests',
         'cast_unittests',
@@ -1280,6 +1287,7 @@ b_tsan_linux = {
       target='Release',
       options=[
         '--compiler=goma',
+        'accessibility_unittests',
         'base_unittests',
         'cast_unittests',
         'components_unittests',
@@ -1736,6 +1744,7 @@ b_linux_asan = {
       options=[
         '--build-tool=ninja',
         '--compiler=goma-clang',
+        'accessibility_unittests',
         'base_unittests',
         'cacheinvalidation_unittests',
         'cast_unittests',
@@ -1830,6 +1839,7 @@ b_linux_clang_tsan = {
       options=[
         '--build-tool=ninja',
         '--compiler=goma-clang',
+        'accessibility_unittests',
         'base_unittests',
         'cacheinvalidation_unittests',
         'cast_unittests',
@@ -1854,6 +1864,7 @@ b_linux_clang_tsan = {
         'unit_tests',
       ],
       tests=[
+        'accessibility_unittests',
         'base_unittests',
         'cacheinvalidation_unittests',
         'cast',
@@ -1944,6 +1955,7 @@ b_linux_redux = {
       slave_type='Trybot',
       options=[
         '--compiler=goma',
+        'accessibility_unittests',
         'base_unittests',
         'cacheinvalidation_unittests',
         'content_unittests',