Move DeclarativeUserScriptManager/Master and UserScriptLoader to //extensions.

extensions/extensions.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_common_constants_sources': [
       'common/constants.cc',
       'common/constants.h',
     ],
@@ skipping 522 matching lines @@
       'browser/content_hash_tree.h',
       'browser/content_verifier.cc',
       'browser/content_verifier.h',
       'browser/content_verifier_delegate.h',
       'browser/content_verifier_io_data.cc',
       'browser/content_verifier_io_data.h',
       'browser/content_verify_job.cc',
       'browser/content_verify_job.h',
       'browser/crx_file_info.cc',
       'browser/crx_file_info.h',
+      'browser/declarative_user_script_manager.cc',
+      'browser/declarative_user_script_manager.h',
+      'browser/declarative_user_script_master.cc',
+      'browser/declarative_user_script_master.h',
+      'browser/extension_user_script_loader.cc',
+      'browser/extension_user_script_loader.h',
       'browser/deferred_start_render_host.h',
       'browser/error_map.cc',
       'browser/error_map.h',
       'browser/event_listener_map.cc',
       'browser/event_listener_map.h',
       'browser/event_router.cc',
       'browser/event_router.h',
       'browser/extension_error.cc',
       'browser/extension_error.h',
       'browser/extension_function.cc',
@@ skipping 175 matching lines @@
       'browser/updater/request_queue.h',
       'browser/updater/request_queue_impl.h',
       'browser/updater/safe_manifest_parser.cc',
       'browser/updater/safe_manifest_parser.h',
       'browser/updater/update_service.cc',
       'browser/updater/update_service.h',
       'browser/updater/update_service_factory.cc',
       'browser/updater/update_service_factory.h',
       'browser/url_request_util.cc',
       'browser/url_request_util.h',
+      'browser/user_script_loader.cc',
+      'browser/user_script_loader.h',
       'browser/value_store/leveldb_value_store.cc',
       'browser/value_store/leveldb_value_store.h',
       'browser/value_store/testing_value_store.cc',
       'browser/value_store/testing_value_store.h',
       'browser/value_store/value_store.cc',
       'browser/value_store/value_store.h',
       'browser/value_store/value_store_change.cc',
       'browser/value_store/value_store_change.h',
       'browser/value_store/value_store_frontend.cc',
       'browser/value_store/value_store_frontend.h',
@@ skipping 258 matching lines @@
       'test/result_catcher.h',
       'test/test_content_utility_client.cc',
       'test/test_content_utility_client.h',
       'test/test_extensions_client.cc',
       'test/test_extensions_client.h',
       'test/test_permission_message_provider.cc',
       'test/test_permission_message_provider.h',
     ],
   },
 }