GN: Add make_core_generated->m..private_script dep

Source/core/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/ui.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/core/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/modules.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/scripts/scripts.gni")
@@ skipping 547 matching lines @@
     rebase_path("../platform/RuntimeEnabledFeatures.in", root_build_dir),
     "--output_dir", rel_blink_core_gen_dir,
   ]
 }
 
 # make_core_generated ----------------------------------------------------------
 
 # GYP version: WebKit/Source/core/core_generated.gyp:make_core_generated
 group("make_core_generated") {
   deps = [
+    ":make_core_generated_private_script",
     ":make_core_generated_xml_viewer_css",
     ":make_core_generated_xml_viewer_js",
     ":make_core_generated_html_entity_table",
     ":make_core_generated_css_property_names",
     ":make_core_generated_media_feature_names",
     ":make_core_generated_media_features",
     ":make_core_generated_media_type_names",
     ":make_core_generated_media_query_tokenizer_codepoints",
     ":make_core_generated_style_property_shorthand",
     ":make_core_generated_style_builder",
@@ skipping 540 matching lines @@
     "$blink_core_output_dir/{{source_name_part}}.h",
   ]
   args = [
     "{{source}}",
     rel_blink_core_gen_dir,
     bison_exe,
   ]
 
   deps = make_core_generated_deps
 }