Use MB on all of the blink bots.

scripts/slave/recipes/chromium_trybot.expected/non_cq_blink_tryjob.json

Index: scripts/slave/recipes/chromium_trybot.expected/non_cq_blink_tryjob.json
diff --git a/scripts/slave/recipes/chromium_trybot.expected/non_cq_blink_tryjob.json b/scripts/slave/recipes/chromium_trybot.expected/non_cq_blink_tryjob.json
index d138e08fe86ce802966b481be06c44bc51da0e71..54c9b89c407eaebbb7a3ba72fe3c40f456da19db 100644
--- a/scripts/slave/recipes/chromium_trybot.expected/non_cq_blink_tryjob.json
+++ b/scripts/slave/recipes/chromium_trybot.expected/non_cq_blink_tryjob.json
@@ -128,6 +128,7 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_DEFINES": "chromium_win_pch=0 component=static_library dcheck_always_on=1 fastbuild=1 gomadir='[BUILD]\\goma' target_arch=ia32 test_isolation_mode=prepare use_goma=1"
     },
     "name": "gclient runhooks (with patch)"
@@ -257,6 +258,25 @@
     "cmd": [
       "python",
       "-u",
+      "[SLAVE_BUILD]\\src\\tools\\mb\\mb.py",
+      "gen",
+      "-m",
+      "tryserver.blink",
+      "-b",
+      "win_blink_rel",
+      "--config-file",
+      "[SLAVE_BUILD]\\src\\tools\\mb\\mb_config.pyl",
+      "--goma-dir",
+      "[BUILD]\\goma",
+      "//out/Release"
+    ],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "generate_build_files (with patch)"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "[BUILD]\\scripts\\slave\\compile.py",
       "--target",
       "Release",