Move Cast certificate verification code from extensions to components.

extensions/extensions_tests.gypi

 # Copyright 2015 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': {
     'extensions_browsertests_sources': [
       'browser/api/audio/audio_apitest.cc',
       'browser/api/bluetooth_socket/bluetooth_socket_apitest.cc',
       'browser/api/display_source/display_source_apitest.cc',
@@ skipping 95 matching lines @@
       'browser/value_store/testing_value_store_unittest.cc',
       'browser/value_store/value_store_change_unittest.cc',
       'browser/value_store/value_store_frontend_unittest.cc',
       'browser/value_store/value_store_unittest.cc',
       'browser/value_store/value_store_unittest.h',
       'browser/verified_contents_unittest.cc',
       'browser/warning_service_unittest.cc',
       'common/api/declarative/declarative_manifest_unittest.cc',
       'common/api/printer_provider/usb_printer_manifest_unittest.cc',
       'common/api/sockets/sockets_manifest_permission_unittest.cc',
-      'common/cast/cast_cert_validator_test_helpers.cc',
-      'common/cast/cast_cert_validator_test_helpers.h',
-      'common/cast/cast_cert_validator_unittest.cc',
       'common/csp_validator_unittest.cc',
       'common/event_filter_unittest.cc',
       'common/extension_l10n_util_unittest.cc',
       'common/extension_resource_unittest.cc',
       'common/extension_set_unittest.cc',
       'common/features/base_feature_provider_unittest.cc',
       'common/features/complex_feature_unittest.cc',
       'common/features/simple_feature_unittest.cc',
       'common/file_util_unittest.cc',
       'common/image_util_unittest.cc',
@@ skipping 45 matching lines @@
       'shell/browser/shell_web_contents_modal_dialog_manager.cc',
       'test/extensions_unittests_main.cc',
       'utility/unpacker_unittest.cc',
     ],
     'extensions_unittests_sources_wifi_display': [
       'renderer/api/display_source/wifi_display/wifi_display_elementary_stream_descriptor_unittest.cc',
       'renderer/api/display_source/wifi_display/wifi_display_media_packetizer_unittest.cc',
     ],
   },
 }