Uses gyp "rules" rather than "actions" templates for the JNI generator.

base/android/jni_generator/jni_generator.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'jni_generator_py_tests',
       'type': 'none',
       'actions': [
@@ skipping 10 matching lines @@
           ],
           'action': [
             'python', 'jni_generator_tests.py',
           ],
         },
       ],
     },
     {
       'target_name': 'jni_sample_header',
       'type': 'none',
-      'actions': [
-        {
-          'action_name': 'generate_jni_sample_header',
-          'inputs': [
-              'jni_generator.py',
-              'SampleForTests.java',
-          ],
-          'outputs': [
-              '<(SHARED_INTERMEDIATE_DIR)/base/jni/sample_for_tests_jni.h',
-          ],
-          'action': [
-            'python',
-            'jni_generator.py',
-            '-o',
-            '<@(_inputs)',
-            '<@(_outputs)',
-          ],
-        },
+      'sources': [
+        'SampleForTests.java',
       ],
+      'variables': {
+        'jni_gen_dir': 'base',
+      },
+      'includes': [ '../../../build/jni_generator.gypi' ],
     },
     {
       'target_name': 'jni_generator_tests',
       'type': 'executable',
       'dependencies': [
         '../../base.gyp:test_support_base',
         'jni_generator_py_tests',
         'jni_sample_header',
       ],
       'include_dirs': [
         '<(SHARED_INTERMEDIATE_DIR)/base',
       ],
       'sources': [
         'sample_for_tests.cc',
       ],
     },
   ],
 }