Revert of Test Keeping NaCl plugins used in app background pages alive when active.

ppapi/tests/extensions/extensions.gyp

 # Copyright (c) 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.
 
 {
   'includes': [
     '../../../ppapi/ppapi_nacl_test_common.gypi',
   ],
   'targets': [
     {
@@ skipping 11 matching lines @@
           '<(DEPTH)/ppapi/tests/test_utils.h',
         ],
         'test_files': [
           'socket/controller.js',
           'socket/index.html',
           'socket/main.js',
           'socket/manifest.json',
         ],
       },
     },
-    {
-      'target_name': 'ppapi_tests_extensions_background_keepalive',
-      'type': 'none',
-      'variables': {
-        'nexe_target': 'ppapi_tests_extensions_background_keepalive',
-        # Only newlib build is used in tests, no need to build others.
-        'build_newlib': 1,
-        'build_glibc': 0,
-        'build_pnacl_newlib': 0,
-        'nexe_destination_dir': 'test_data/ppapi/tests/extensions/background_keepalive',
-        'sources': [
-          'background_keepalive/background.cc',
-        ],
-        'test_files': [
-          'background_keepalive/background.js',
-          'background_keepalive/manifest.json',
-        ],
-      },
-    },
   ],
 }