Remove the EventFactory machinery.

sky/engine/build/scripts/scripts.gni

 # 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("//sky/engine/config.gni")
 
 # All paths in this file should be absolute so targets in any directory can use
 # them without worrying about the current directory.
 _scripts_dir = "//sky/engine/build/scripts"
 
 scripts_for_in_files = [
   # jinja2/__init__.py contains version string, so sufficient as
   # dependency for whole jinja2 package
   "//third_party/jinja2/__init__.py",
   "//third_party/markupsafe/__init__.py",  # jinja2 dep
   "$_scripts_dir/hasher.py",
   "$_scripts_dir/in_file.py",
   "$_scripts_dir/in_generator.py",
   "$_scripts_dir/license.py",
   "$_scripts_dir/name_macros.py",
   "$_scripts_dir/name_utilities.py",
   "$_scripts_dir/template_expander.py",
   "$_scripts_dir/templates/macros.tmpl",
 ]
 
 css_properties_files =
     scripts_for_in_files + [ "$_scripts_dir/css_properties.py" ]
 
-make_event_factory_files = scripts_for_in_files + [
-                             "$_scripts_dir/make_event_factory.py",
-                             "$_scripts_dir/templates/EventFactory.cpp.tmpl",
-                           ]
+make_event_factory_files =
+    scripts_for_in_files + [ "$_scripts_dir/make_event_factory.py" ]
 
 make_names_files = scripts_for_in_files + [
                      "$_scripts_dir/make_names.py",
                      "$_scripts_dir/templates/MakeNames.cpp.tmpl",
                      "$_scripts_dir/templates/MakeNames.h.tmpl",
                    ]
 
 make_qualified_names_files =
     scripts_for_in_files + [
       "$_scripts_dir/make_qualified_names.py",
@@ skipping 200 matching lines @@
     ]
 
     args = [
       rebase_path(invoker.input_file, root_build_dir),
       rebase_path(invoker.output_file, root_build_dir),
     ]
 
     deps = make_core_generated_deps
   }
 }