Make lint fail builds.

build/android/lint_action.gypi

 # Copyright 2013 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.
 
 # This file is meant to be included into an action to provide a rule to
 # run lint on java/class files.
 
 {
   'action_name': 'lint_<(_target_name)',
   'message': 'Linting <(_target_name)',
@@ skipping 18 matching lines @@
     'python', '<(DEPTH)/build/android/gyp/lint.py',
     '--lint-path=<(android_sdk_root)/tools/lint',
     '--config-path=<(DEPTH)/build/android/lint/suppressions.xml',
     '--processed-config-path=<(config_path)',
     '--manifest-path=<(android_manifest_path)',
     '--result-path=<(result_path)',
     '--resource-dir=<(resource_dir)',
     '--product-dir=<(PRODUCT_DIR)',
     '--src-dirs=>(src_dirs)',
     '--jar-path=<(lint_jar_path)',
+    '--can-fail-build',
     '--stamp=<(stamp_path)',
     '<(is_enabled)',
   ],
 }