Teach main thread event queue about closures.

content/renderer/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//content/common/features.gni")
 import("//media/media_options.gni")
@@ skipping 158 matching lines @@
     "in_process_renderer_thread.h",
     "input/input_event_filter.cc",
     "input/input_event_filter.h",
     "input/input_handler_manager.cc",
     "input/input_handler_manager.h",
     "input/input_handler_manager_client.h",
     "input/input_handler_wrapper.cc",
     "input/input_handler_wrapper.h",
     "input/main_thread_event_queue.cc",
     "input/main_thread_event_queue.h",
+    "input/main_thread_event_queue_task.h",
+    "input/main_thread_event_queue_task_list.cc",
+    "input/main_thread_event_queue_task_list.h",
     "input/main_thread_input_event_filter.cc",
     "input/main_thread_input_event_filter.h",
     "input/render_widget_input_handler.cc",
     "input/render_widget_input_handler.h",
     "input/render_widget_input_handler_delegate.h",
     "input/scoped_web_input_event_with_latency_info.cc",
     "input/scoped_web_input_event_with_latency_info.h",
     "installedapp/related_apps_fetcher.cc",
     "installedapp/related_apps_fetcher.h",
     "internal_document_state_data.cc",
@@ skipping 769 matching lines @@
     # For the defines in mojo_media_config.
     public_configs = [ "//media/mojo/services:mojo_media_config" ]
   }
 
   if (!is_component_build) {
     public_deps = [
       ":renderer",
     ]
   }
 }