Remove some test files from extensions_unittests target.

extensions/extensions.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 520 matching lines @@
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         'extensions_common',
         'extensions_strings.gyp:extensions_strings',
         'extensions_test_support',
       ],
       'sources': [
         'common/api/sockets/sockets_manifest_permission_unittest.cc',
         'common/csp_validator_unittest.cc',
         'common/event_filter_unittest.cc',
-        'common/file_util_unittest.cc',
         'common/id_util_unittest.cc',
-        'common/manifest_handler_unittest.cc',
         'common/one_shot_event_unittest.cc',
-        'common/permissions/api_permission_set_unittest.cc',
         'common/permissions/manifest_permission_set_unittest.cc',
-        'common/url_pattern_set_unittest.cc',
-        'common/url_pattern_unittest.cc',
         'common/user_script_unittest.cc',
         'test/extensions_unittests_main.cc',
         'test/test_extensions_client.cc',
         'test/test_extensions_client.h',
         'test/test_permission_message_provider.cc',
         'test/test_permission_message_provider.h',
         'test/test_permissions_provider.cc',
         'test/test_permissions_provider.h',
       ],
     },
   ]
 }