Use MB on all of the blink bots.

scripts/slave/recipes/chromium.expected/full_chromium_webkit_WebKit_Win_Oilpan__dbg_.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_webkit_WebKit_Win_Oilpan__dbg_.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_webkit_WebKit_Win_Oilpan__dbg_.json b/scripts/slave/recipes/chromium.expected/full_chromium_webkit_WebKit_Win_Oilpan__dbg_.json
index 3c1f146eecac6d1cbb23b7598868624798b8f88b..b8e048d656d496120fdec1aab5967fcb62bb839b 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_webkit_WebKit_Win_Oilpan__dbg_.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_webkit_WebKit_Win_Oilpan__dbg_.json
@@ -122,6 +122,7 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_DEFINES": "chromium_win_pch=0 component=shared_library enable_oilpan=1 fastbuild=1 gomadir='[BUILD]\\goma' target_arch=ia32 test_isolation_mode=prepare use_goma=1"
     },
     "name": "gclient runhooks"
@@ -200,6 +201,27 @@
     "cmd": [
       "python",
       "-u",
+      "[SLAVE_BUILD]\\src\\tools\\mb\\mb.py",
+      "gen",
+      "-m",
+      "chromium.webkit",
+      "-b",
+      "WebKit Win Oilpan (dbg)",
+      "--config-file",
+      "[SLAVE_BUILD]\\src\\tools\\mb\\mb_config.pyl",
+      "--goma-dir",
+      "[BUILD]\\goma",
+      "--swarming-targets-file",
+      "browser_tests\n",
+      "//out/Debug"
+    ],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "generate_build_files"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "[BUILD]\\scripts\\slave\\compile.py",
       "--target",
       "Debug",