Refactoring: de-couple Extensions from "script injection System" [render side] : 1

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 12 matching lines @@
       'common/api/sockets/sockets_manifest_data.cc',
       'common/api/sockets/sockets_manifest_data.h',
       'common/api/sockets/sockets_manifest_handler.cc',
       'common/api/sockets/sockets_manifest_handler.h',
       'common/api/sockets/sockets_manifest_permission.cc',
       'common/api/sockets/sockets_manifest_permission.h',
       'common/cast/cast_cert_validator.cc',
       'common/cast/cast_cert_validator.h',
       'common/common_manifest_handlers.cc',
       'common/common_manifest_handlers.h',
+      'common/host_id.cc',
       'common/host_id.h',
       'common/csp_validator.cc',
       'common/csp_validator.h',
       'common/dom_action_types.h',
       'common/draggable_region.cc',
       'common/draggable_region.h',
       'common/error_utils.cc',
       'common/error_utils.h',
       'common/event_filter.cc',
       'common/event_filter.h',
@@ skipping 778 matching lines @@
       'renderer/dispatcher_delegate.h',
       'renderer/document_custom_bindings.cc',
       'renderer/document_custom_bindings.h',
       'renderer/dom_activity_logger.cc',
       'renderer/dom_activity_logger.h',
       'renderer/event_bindings.cc',
       'renderer/event_bindings.h',
       'renderer/extension_groups.h',
       'renderer/extension_helper.cc',
       'renderer/extension_helper.h',
+      'renderer/extension_injection_host.cc',
+      'renderer/extension_injection_host.h',
       'renderer/extensions_render_frame_observer.cc',
       'renderer/extensions_render_frame_observer.h',
       'renderer/extensions_renderer_client.cc',
       'renderer/extensions_renderer_client.h',
       'renderer/file_system_natives.cc',
       'renderer/file_system_natives.h',
       'renderer/guest_view/extensions_guest_view_container.cc',
       'renderer/guest_view/extensions_guest_view_container.h',
       'renderer/guest_view/guest_view_container.cc',
       'renderer/guest_view/guest_view_container.h',
       'renderer/guest_view/guest_view_internal_custom_bindings.cc',
       'renderer/guest_view/guest_view_internal_custom_bindings.h',
       'renderer/guest_view/mime_handler_view/mime_handler_view_container.cc',
       'renderer/guest_view/mime_handler_view/mime_handler_view_container.h',
       'renderer/i18n_custom_bindings.cc',
       'renderer/i18n_custom_bindings.h',
       'renderer/id_generator_custom_bindings.cc',
       'renderer/id_generator_custom_bindings.h',
+      'renderer/injection_host.cc',
+      'renderer/injection_host.h',
       'renderer/lazy_background_page_native_handler.cc',
       'renderer/lazy_background_page_native_handler.h',
       'renderer/logging_native_handler.cc',
       'renderer/logging_native_handler.h',
       'renderer/messaging_bindings.cc',
       'renderer/messaging_bindings.h',
       'renderer/module_system.cc',
       'renderer/module_system.h',
       'renderer/native_handler.cc',
       'renderer/native_handler.h',
@@ skipping 138 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',
     ],
   },
 }