Use _target_name instead of package_name for java*.gypi

sync/sync_tests.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.
 
 {
   'targets': [
     # Test support files for the 'sync_core' target.
     {
       'target_name': 'test_support_sync_core',
       'type': 'static_library',
@@ skipping 550 matching lines @@
           ],
         },
       ],
     }],
     ['OS == "android"', {
       'targets': [
         {
           'target_name': 'sync_javatests',
           'type': 'none',
           'variables': {
-            'package_name': 'sync_javatests',
             'java_in_dir': '../sync/android/javatests',
           },
           'dependencies': [
             'sync_java',
             '../base/base.gyp:base_java_test_support',
           ],
           'includes': [ '../build/java.gypi' ],
         },
       ],
     }],
@@ skipping 10 matching lines @@
           'variables': {
             'test_suite_name': 'sync_unit_tests',
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)sync_unit_tests<(SHARED_LIB_SUFFIX)',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }