[Android] Use mb on chromium.linux and tryserver.chromium.android.

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

Index: scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Clang_Builder__dbg_.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Clang_Builder__dbg_.json b/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Clang_Builder__dbg_.json
index 64546eb4166106231d440a954a13200961e3c7be..ef27dfee8f8c1e52f386cfbf692276b9d31a75c2 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Clang_Builder__dbg_.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Clang_Builder__dbg_.json
@@ -119,6 +119,7 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "OS=android asan=1 clang=1 component=shared_library enable_errorprone=1 fastbuild=1 ffmpeg_branding=Chrome gomadir='[SLAVE_BUILD]/src/build/goma/client' proprietary_codecs=1 run_findbugs=1 target_arch=arm use_allocator=none use_goma=1",
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
@@ -212,6 +213,25 @@
     "name": "tree truth steps"
   },
   {
+    "cmd": [
+      "python",
+      "-u",
+      "[SLAVE_BUILD]/src/tools/mb/mb.py",
+      "gen",
+      "-m",
+      "chromium.linux",
+      "-b",
+      "Android Clang Builder (dbg)",
+      "--config-file",
+      "[SLAVE_BUILD]/src/tools/mb/mb_config.pyl",
+      "--goma-dir",
+      "[BUILD]/goma",
+      "//out/Debug"
+    ],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "generate_build_files"
+  },
+  {
     "allow_subannotations": true,
     "cmd": [
       "python",