Add function to check what HTML Element interface corresponds to a given tag name.

third_party/WebKit/Source/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("//build/toolchain/toolchain.gni")
 import("//third_party/WebKit/Source/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 = "//third_party/WebKit/Source/build/scripts"
@@ skipping 36 matching lines @@
 make_element_factory_files =
     make_qualified_names_files + [
       "$_scripts_dir/make_element_factory.py",
       "$_scripts_dir/templates/ElementFactory.cpp.tmpl",
       "$_scripts_dir/templates/ElementFactory.h.tmpl",
     ]
 
 make_element_type_helpers_files =
     make_qualified_names_files + [
       "$_scripts_dir/make_element_type_helpers.py",
+      "$_scripts_dir/templates/ElementTypeHelpers.cpp.tmpl",
       "$_scripts_dir/templates/ElementTypeHelpers.h.tmpl",
     ]
 
 make_trie_helpers_files =
     scripts_for_in_files + [ "$_scripts_dir/trie_builder.py" ]
 
 # The executables are relative to the build directory. Don't rebase it because
 # on Posix we want to run the system one on the path.
 if (host_os == "win") {
   gperf_exe = rebase_path("//third_party/gperf/bin/gperf.exe", root_build_dir)
@@ skipping 127 matching lines @@
     other_inputs = make_event_factory_files
     forward_variables_from(invoker,
                            [
                              "deps",
                              "in_files",
                              "outputs",
                              "visibility",
                            ])
   }
 }