Separate plugin_metadata from plugin_installer, thread-safe plugin_finder

chrome/chrome_tests.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' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1416 matching lines @@
         'browser/password_manager/password_form_manager_unittest.cc',
         'browser/password_manager/password_manager_unittest.cc',
         'browser/password_manager/password_store_unittest.cc',
         'browser/password_manager/password_store_default_unittest.cc',
         'browser/password_manager/password_store_mac_unittest.cc',
         'browser/password_manager/password_store_win_unittest.cc',
         'browser/password_manager/password_store_x_unittest.cc',
         'browser/performance_monitor/database_unittest.cc',
         'browser/performance_monitor/performance_monitor_util_unittest.cc',
         'browser/plugin_finder_unittest.cc',
-        'browser/plugin_installer_unittest.cc',
+        'browser/plugin_metadata_unittest.cc',
         'browser/plugin_prefs_unittest.cc',
         'browser/policy/async_policy_provider_unittest.cc',
         'browser/policy/auto_enrollment_client_unittest.cc',
         'browser/policy/cloud_policy_client_unittest.cc',
         'browser/policy/cloud_policy_controller_unittest.cc',
         'browser/policy/cloud_policy_provider_unittest.cc',
         'browser/policy/cloud_policy_refresh_scheduler_unittest.cc',
         'browser/policy/cloud_policy_service_unittest.cc',
         'browser/policy/cloud_policy_subsystem_unittest.cc',
         'browser/policy/cloud_policy_validator_unittest.cc',
@@ skipping 1099 matching lines @@
             'browser/sync/glue/theme_data_type_controller_unittest.cc',
             'browser/sync/glue/theme_util_unittest.cc',
             'browser/ui/webui/theme_source_unittest.cc',
           ],
           'sources/': [
             ['exclude', '^browser/themes/'],
           ],
         }],
         ['enable_plugin_installation==0', {
           'sources!': [
-            'browser/plugin_finder_unittest.cc',
-            'browser/plugin_installer_unittest.cc',
           ],
         }],
         ['enable_protector_service==0', {
           'sources/': [
             ['exclude', '^browser/protector/'],
           ],
         }],
         ['toolkit_views==1', {
           'dependencies': [
             '../ui/views/views.gyp:views',
@@ skipping 2193 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'browser_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }