[build] Prepare MB config for splitting tsan builder

The TSAN builder will be split into builder and tester. This adds the config
for the builder, but keeps the configs for the testers to be removed after
the infra side switch.

This also cleans up redundant concurrent-marking configs, since concurrent
marking is on by default. This also removes a config of a builder that no
longer exists.

TBR=sergiyb@chromium.org
NOTRY=true

Bug: v8:8009
Change-Id: Ic7b146505b5059a2508da94d01d156d5e5e2b997
Reviewed-on: https://chromium-review.googlesource.com/1160308
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54864}

infra/mb/mb_config.pyl

@@ -69,7 +69,6 @@
       'V8 Linux - verify csa': 'release_x86_verify_csa',
       # Linux64.
       'V8 Linux64 - builder': 'release_x64',
-      'V8 Linux64 - concurrent marking - builder': 'release_x64_concurrent_marking',
       'V8 Linux64 - debug builder': 'debug_x64',
       'V8 Linux64 - custom snapshot - debug builder': 'debug_x64_custom',
       'V8 Linux64 - internal snapshot': 'release_x64_internal',
@@ -97,9 +96,10 @@
       'V8 Mac64 ASAN': 'release_x64_asan_no_lsan',
       # Sanitizers.
       'V8 Linux64 ASAN': 'release_x64_asan',
+      'V8 Linux64 TSAN builder': 'release_x64_tsan',
+      # TODO(machenbach): Remove when turning into testers on infra side.
       'V8 Linux64 TSAN': 'release_x64_tsan',
-      'V8 Linux64 TSAN - concurrent marking':
-          'release_x64_tsan_concurrent_marking',
+      'V8 Linux64 TSAN - concurrent marking': 'release_x64_tsan',
       'V8 Linux - arm64 - sim - MSAN': 'release_simulate_arm64_msan',
       # Misc.
       'V8 Linux gcc 4.8': 'release_x86_gcc',
@@ -232,7 +232,7 @@
       'v8_linux64_jumbo_limited_compile_rel': 'release_x64_jumbo_limited_trybot',
       'v8_linux64_tsan_rel': 'release_x64_tsan_minimal_symbols',
       'v8_linux64_tsan_concurrent_marking_rel_ng':
-          'release_x64_tsan_concurrent_marking_minimal_symbols',
+          'release_x64_tsan_minimal_symbols',
       'v8_linux64_ubsan_rel_ng': 'release_x64_ubsan_vptr_minimal_symbols',
       # TODO(machenbach): Remove after switching to x64 on infra side.
       'v8_win_dbg': 'debug_x86_trybot',
@@ -445,8 +445,6 @@
       'release_bot', 'x64', 'cfi_clusterfuzz'],
     'release_x64_msvc': [
       'release_bot', 'x64', 'msvc'],
-    'release_x64_concurrent_marking': [
-      'release_bot', 'x64', 'v8_enable_concurrent_marking'],
     'release_x64_correctness_fuzzer' : [
       'release_bot', 'x64', 'v8_correctness_fuzzer'],
     'release_x64_fuchsia': [
@@ -475,11 +473,6 @@
       'release_trybot', 'x64', 'v8_enable_test_features'],
     'release_x64_tsan': [
       'release_bot', 'x64', 'tsan'],
-    'release_x64_tsan_concurrent_marking': [
-      'release_bot', 'x64', 'v8_enable_concurrent_marking', 'tsan'],
-    'release_x64_tsan_concurrent_marking_minimal_symbols': [
-      'release_bot', 'x64', 'v8_enable_concurrent_marking', 'tsan',
-      'minimal_symbols'],
     'release_x64_tsan_minimal_symbols': [
       'release_bot', 'x64', 'tsan', 'minimal_symbols'],
     'release_x64_ubsan': [
@@ -808,10 +801,6 @@
       'gn_args': 'v8_check_header_includes=true',
     },
 
-    'v8_enable_concurrent_marking': {
-      'gn_args': 'v8_enable_concurrent_marking=true',
-    },
-
     'v8_correctness_fuzzer': {
       'mixins': ['v8_enable_test_features'],
       'gn_args': 'v8_correctness_fuzzer=true v8_multi_arch_build=true',