perf.fyi: Add 'mb' to the Win Clang Builder

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

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\kill_processes.py"
     ],
     "name": "taskkill"
   },
   {
@@ skipping 197 matching lines @@
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[depot_tools]\\gclient.py",
       "runhooks"
     ],
     "cwd": "[BUILDER_CACHE]\\Win_Clang_Builder\\src",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json",
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_DEFINES": "branding=Chrome buildtype=Official clang=1 component=static_library fastbuild=1 gomadir='[CACHE]\\cipd\\goma' target_arch=ia32 use_goma=1",
       "PATH": "%(PATH)s;RECIPE_PACKAGE_REPO[depot_tools]"
     },
     "name": "gclient runhooks"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILDER_CACHE]\\Win_Clang_Builder\\src\\testing\\scripts\\get_compile_targets.py",
@@ skipping 33 matching lines @@
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\tools\\runit.py",
       "--show-path",
       "python",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\cleanup_temp.py"
     ],
     "name": "cleanup_temp"
   },
   {
+    "cmd": [
+      "python",
+      "-u",
+      "[BUILDER_CACHE]\\Win_Clang_Builder\\src\\tools\\mb\\mb.py",
+      "gen",
+      "-m",
+      "chromium.perf.fyi",
+      "-b",
+      "Win Clang Builder",
+      "--config-file",
+      "[BUILDER_CACHE]\\Win_Clang_Builder\\src\\tools\\mb\\mb_config.pyl",
+      "--goma-dir",
+      "[CACHE]\\cipd\\goma",
+      "//out/Release"
+    ],
+    "cwd": "[BUILDER_CACHE]\\Win_Clang_Builder\\src",
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
+    },
+    "name": "generate_build_files"
+  },
+  {
     "allow_subannotations": true,
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\clang_revision.py",
       "--src-dir",
       "[BUILDER_CACHE]\\Win_Clang_Builder\\src",
       "--output-json",
       "/path/to/tmp/json"
     ],
@@ skipping 163 matching lines @@
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
     },
     "name": "process_dumps"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]