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

content/content_shell.gypi

 # 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.
 
 {
   'variables': {
     'content_shell_product_name': 'Content Shell',
   },
   'targets': [
     {
@@ skipping 485 matching lines @@
         },  # target content_shell_helper_app
       ],
     }],  # OS=="mac"
     ['OS=="android"', {
       'targets': [
         {
           # TODO(jrg): Update this action and other jni generators to only
           # require specifying the java directory and generate the rest.
           'target_name': 'content_shell_jni_headers',
           'type': 'none',
+          'sources': [
+            'shell/android/java/src/org/chromium/content_shell/ShellManager.java',
+            'shell/android/java/src/org/chromium/content_shell/Shell.java',
+          ],
           'variables': {
-            'java_sources': [
-              'shell/android/java/src/org/chromium/content_shell/ShellManager.java',
-              'shell/android/java/src/org/chromium/content_shell/Shell.java',
-            ],
-            'jni_headers': [
-              '<(SHARED_INTERMEDIATE_DIR)/content/shell/jni/shell_manager_jni.h',
-              '<(SHARED_INTERMEDIATE_DIR)/content/shell/jni/shell_jni.h',
-            ],
+            'jni_gen_dir': 'content/shell',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
         {
           'target_name': 'libcontent_shell_content_view',
           'type': 'shared_library',
           'dependencies': [
             'content_shell_jni_headers',
             'content_shell_lib',
             'content_shell_pak',
@@ skipping 122 matching lines @@
                 '-buildfile',
                 '<(DEPTH)/content/shell/android/javatests/content_shell_test_apk.xml',
               ]
             }
           ],
         },
       ],
     }],  # OS=="android"
   ]
 }