Move Sync-specific tests from ExtensionServiceTest into new file

chrome/chrome_tests_unit.gypi

 # Copyright 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': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 687 matching lines @@
       'browser/extensions/extension_management_test_util.cc',
       'browser/extensions/extension_management_test_util.h',
       'browser/extensions/extension_management_unittest.cc',
       'browser/extensions/extension_message_bubble_controller_unittest.cc',
       'browser/extensions/extension_migrator_unittest.cc',
       'browser/extensions/extension_path_util_unittest.cc',
       'browser/extensions/extension_prefs_unittest.cc',
       'browser/extensions/extension_prefs_unittest.h',
       'browser/extensions/extension_protocols_unittest.cc',
       'browser/extensions/extension_reenabler_unittest.cc',
+      'browser/extensions/extension_service_sync_unittest.cc',
       'browser/extensions/extension_service_test_base.cc',
       'browser/extensions/extension_service_test_base.h',
+      'browser/extensions/extension_service_test_with_install.cc',
+      'browser/extensions/extension_service_test_with_install.h',
       'browser/extensions/extension_service_unittest.cc',
       'browser/extensions/extension_special_storage_policy_unittest.cc',
       'browser/extensions/extension_sync_data_unittest.cc',
       'browser/extensions/extension_test_message_listener_unittest.cc',
       'browser/extensions/extension_user_script_loader_unittest.cc',
       'browser/extensions/extension_web_ui_unittest.cc',
       'browser/extensions/external_policy_loader_unittest.cc',
       'browser/extensions/external_provider_impl_chromeos_unittest.cc',
       'browser/extensions/external_provider_impl_unittest.cc',
       'browser/extensions/favicon_downloader_unittest.cc',
@@ skipping 2257 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }