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

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

Index: scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Builder__dbg_.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Builder__dbg_.json b/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Builder__dbg_.json
index d3daf9978976a7f3b4d63f3dc4253d2734b0272b..2fedbbc642ccb45487f4698c72a3861a416d380d 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Builder__dbg_.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_linux_Android_Builder__dbg_.json
@@ -133,6 +133,7 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
+      "GYP_CHROMIUM_NO_ACTION": "1",
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "OS=android component=static_library fastbuild=1 ffmpeg_branding=Chrome gomadir='[SLAVE_BUILD]/src/build/goma/client' proprietary_codecs=1 target_arch=arm test_isolation_mode=prepare 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]"
@@ -252,6 +253,31 @@
     "cmd": [
       "python",
       "-u",
+      "[SLAVE_BUILD]/src/tools/mb/mb.py",
+      "gen",
+      "-m",
+      "chromium.linux",
+      "-b",
+      "Android Builder (dbg)",
+      "--config-file",
+      "[SLAVE_BUILD]/src/tools/mb/mb_config.pyl",
+      "--goma-dir",
+      "[BUILD]/goma",
+      "--swarming-targets-file",
+      "browser_tests_apk\n",
+      "//out/Debug"
+    ],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "generate_build_files",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@swarming-targets-file.txt@browser_tests_apk@@@",
+      "@@@STEP_LOG_END@swarming-targets-file.txt@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "RECIPE_PACKAGE_REPO[build]/scripts/slave/compile.py",
       "--target",
       "Debug",