Revert "Generate some of the C++ bindings for mojom tagged unions."

mojo/public/tools/bindings/mojom.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("../../mojo_sdk.gni")
 
 # Generate C++ and JavaScript source files from mojom files. The output files
 # will go under the generated file directory tree with the same path as each
 # input file.
 #
@@ skipping 43 matching lines @@
     "$generator_root/generators/cpp_templates/interface_definition.tmpl",
     "$generator_root/generators/cpp_templates/interface_macros.tmpl",
     "$generator_root/generators/cpp_templates/interface_proxy_declaration.tmpl",
     "$generator_root/generators/cpp_templates/interface_request_validator_declaration.tmpl",
     "$generator_root/generators/cpp_templates/interface_response_validator_declaration.tmpl",
     "$generator_root/generators/cpp_templates/interface_stub_declaration.tmpl",
     "$generator_root/generators/cpp_templates/module.cc.tmpl",
     "$generator_root/generators/cpp_templates/module.h.tmpl",
     "$generator_root/generators/cpp_templates/module-internal.h.tmpl",
     "$generator_root/generators/cpp_templates/params_definition.tmpl",
-    "$generator_root/generators/cpp_templates/serialization_macros.tmpl",
     "$generator_root/generators/cpp_templates/struct_declaration.tmpl",
     "$generator_root/generators/cpp_templates/struct_definition.tmpl",
+    "$generator_root/generators/cpp_templates/struct_serialization_declaration.tmpl",
     "$generator_root/generators/cpp_templates/struct_serialization_definition.tmpl",
     "$generator_root/generators/cpp_templates/struct_macros.tmpl",
     "$generator_root/generators/cpp_templates/wrapper_class_declaration.tmpl",
     "$generator_root/generators/cpp_templates/wrapper_class_definition.tmpl",
-    "$generator_root/generators/cpp_templates/union_declaration.tmpl",
-    "$generator_root/generators/cpp_templates/union_definition.tmpl",
-    "$generator_root/generators/cpp_templates/union_serialization_definition.tmpl",
-    "$generator_root/generators/cpp_templates/wrapper_union_class_declaration.tmpl",
-    "$generator_root/generators/cpp_templates/wrapper_union_class_definition.tmpl",
     "$generator_root/generators/dart_templates/enum_definition.tmpl",
     "$generator_root/generators/dart_templates/interface_definition.tmpl",
     "$generator_root/generators/dart_templates/module.lib.tmpl",
     "$generator_root/generators/dart_templates/module_definition.tmpl",
     "$generator_root/generators/dart_templates/struct_definition.tmpl",
     "$generator_root/generators/java_templates/constant_definition.tmpl",
     "$generator_root/generators/java_templates/constants.java.tmpl",
     "$generator_root/generators/java_templates/enum.java.tmpl",
     "$generator_root/generators/java_templates/enum_definition.tmpl",
     "$generator_root/generators/java_templates/header.java.tmpl",
@@ skipping 168 matching lines @@
         # //mojo/something:something and we can append "_java" to get the java
         # dependency name.
         full_name = get_label_info(d, "label_no_toolchain")
         deps += [ "${full_name}_java" ]
       }
 
       srcjars = process_file_template(invoker.sources, generator_java_outputs)
     }
   }
 }