V8: Switch windows bots to mb

scripts/slave/recipes/v8.expected/full_tryserver_v8_v8_win64_rel_ng.json

Index: scripts/slave/recipes/v8.expected/full_tryserver_v8_v8_win64_rel_ng.json
diff --git a/scripts/slave/recipes/v8.expected/full_tryserver_v8_v8_win64_rel_ng.json b/scripts/slave/recipes/v8.expected/full_tryserver_v8_v8_win64_rel_ng.json
index 528f681398e6912a826f801da827b6f5d7930a0c..99a8cd99b9904a036570e21413b2016a3534832e 100644
--- a/scripts/slave/recipes/v8.expected/full_tryserver_v8_v8_win64_rel_ng.json
+++ b/scripts/slave/recipes/v8.expected/full_tryserver_v8_v8_win64_rel_ng.json
@@ -155,6 +155,7 @@
     "cwd": "[SLAVE_BUILD]\\v8",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json",
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_DEFINES": "chromium_win_pch=0 dcheck_always_on=1 fastbuild=1 gomadir='[CACHE]\\cipd\\goma' target_arch=x64 test_isolation_mode=prepare use_goma=1 v8_target_arch=x64",
       "GYP_GENERATORS": "ninja",
       "PATH": "%(PATH)s;RECIPE_PACKAGE_REPO[depot_tools]"
@@ -176,6 +177,45 @@
     "cmd": [
       "python",
       "-u",
+      "[SLAVE_BUILD]\\v8\\tools\\mb\\mb.py",
+      "gen",
+      "-m",
+      "tryserver.v8",
+      "-b",
+      "v8_win64_rel_ng",
+      "--config-file",
+      "[SLAVE_BUILD]\\v8\\infra\\mb\\mb_config.pyl",
+      "--goma-dir",
+      "[CACHE]\\cipd\\goma",
+      "--gyp-script=gypfiles\\gyp_v8",
+      "//out/Release_x64"
+    ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
+    "name": "generate_build_files",
+    "stdout": "/path/to/tmp/",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@stdout@some line@@@",
+      "@@@STEP_LOG_LINE@stdout@GYP_DEFINES='target_arch=x64 cool_flag=a=1'@@@",
+      "@@@STEP_LOG_LINE@stdout@moar@@@",
+      "@@@STEP_LOG_END@stdout@@@",
+      "@@@STEP_LOG_LINE@diff@+ cool_flag: a=1@@@",
+      "@@@STEP_LOG_LINE@diff@- chromium_win_pch: 0@@@",
+      "@@@STEP_LOG_LINE@diff@- dcheck_always_on: 1@@@",
+      "@@@STEP_LOG_LINE@diff@- fastbuild: 1@@@",
+      "@@@STEP_LOG_LINE@diff@- gomadir: '[CACHE]\\cipd\\goma'@@@",
+      "@@@STEP_LOG_LINE@diff@  target_arch: x64@@@",
+      "@@@STEP_LOG_LINE@diff@- test_isolation_mode: prepare@@@",
+      "@@@STEP_LOG_LINE@diff@- use_goma: 1@@@",
+      "@@@STEP_LOG_END@diff@@@",
+      "@@@STEP_WARNINGS@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\tools\\runit.py",
       "--show-path",
       "python",