WebRTC: Enable MB for Android bots.

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android32_clang__dbg_.json

Index: scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android32_clang__dbg_.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android32_clang__dbg_.json b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android32_clang__dbg_.json
index 43be99de645ed4f6fcbf1245c39af0e57f1ee3b3..03f3d5861b78fe171bbfef6522aaf234c7f7f3b3 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android32_clang__dbg_.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_android32_clang__dbg_.json
@@ -178,6 +178,7 @@
     "cwd": "[BUILDER_CACHE]/Android32_Clang__dbg_/src",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json",
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "OS=android clang=1 component=static_library fastbuild=1 gomadir='[CACHE]/cipd/goma' target_arch=arm use_goma=1",
       "PATH": "[BUILDER_CACHE]/Android32_Clang__dbg_/src/third_party/android_tools/sdk/platform-tools:[BUILDER_CACHE]/Android32_Clang__dbg_/src/build/android:%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
@@ -185,6 +186,29 @@
     "name": "gclient runhooks"
   },
   {
+    "cmd": [
+      "python",
+      "-u",
+      "[BUILDER_CACHE]/Android32_Clang__dbg_/src/tools/mb/mb.py",
+      "gen",
+      "-m",
+      "client.webrtc",
+      "-b",
+      "Android32 Clang (dbg)",
+      "--config-file",
+      "[BUILDER_CACHE]/Android32_Clang__dbg_/src/webrtc/build/mb_config.pyl",
+      "--goma-dir",
+      "[CACHE]/cipd/goma",
+      "--gyp-script=[BUILDER_CACHE]/Android32_Clang__dbg_/src/webrtc/build/gyp_webrtc.py",
+      "//out/Debug"
+    ],
+    "cwd": "[BUILDER_CACHE]/Android32_Clang__dbg_/src",
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
+    },
+    "name": "generate_build_files"
+  },
+  {
     "allow_subannotations": true,
     "cmd": [
       "python",