[Android WebView] Make 3rd party licenses checker to turn bot red

build/android/buildbot/buildbot_functions.sh

 #!/bin/bash
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # Bash functions used by buildbot annotator scripts for the android
 # build of chromium.  Executing this script should not perform actions
 # other than setting variables and defining of functions.
 
 # Number of jobs on the compile line; e.g.  make -j"${JOBS}"
@@ skipping 242 matching lines @@
   local extract_exit_code=$?
   if (( $extract_exit_code > 1 )); then
     echo "@@@STEP_WARNINGS@@@"
     return
   fi
   return $extract_exit_code
   )
 }
 
 # Runs the license checker for the WebView build.
+# License checker may return error code 1 meaning that
+# there are non-fatal problems (warnings). Everything
+# above 1 is considered to be a show-stopper.
 function bb_check_webview_licenses {
   echo "@@@BUILD_STEP Check licenses for WebView@@@"
   (
   set +e
   cd "${SRC_ROOT}"
   python android_webview/tools/webview_licenses.py scan
-  if [[ $? -ne 0 ]]; then
+  local licenses_exit_code=$?
+  if [[ $licenses_exit_code -eq 1 ]]; then
     echo "@@@STEP_WARNINGS@@@"
+  elif [[ $licenses_exit_code -gt 1 ]]; then
+    echo "@@@STEP_FAILURE@@@"
   fi
   return 0
   )
 }
 
 # Retrieve a packed json property using python
 function bb_get_json_prop {
   local JSON="$1"
   local PROP="$2"
 
   python -c "import json; print json.loads('$JSON').get('$PROP', '')"
 }