Use Web IDL Union types in Service Worker's Cache interface

Source/bindings/templates/union.cpp

 // 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.
 
 // This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
 
 #include "config.h"
 #include "{{header_filename}}"
 
 {% macro assign_and_return_if_hasinstance(member) %}
@@ skipping 113 matching lines @@
         return;
     }
 
     {# 18. Boolean (fallback) #}
     {% elif container.boolean_type %}
     {
         impl.setBoolean(v8Value->ToBoolean()->Value());
         return;
     }
 
-    {% endif %}
+    {% else %}
     {# 19. TypeError #}
     exceptionState.throwTypeError("Not a valid union member.");

[haraken, 2014/11/07 00:06:36]

I guess we unconditionally need exceptionState.throwTypeError, but don't we?

[bashi, 2014/11/07 00:24:07]

When I implement this, I thought we need to make this unconditional. But as the
compiler complained, we don't need this statement when we generate step16-18.

[haraken, 2014/11/07 01:15:33]

Makes sense, thanks!

+    {% endif %}
 }
 
 v8::Handle<v8::Value> toV8({{container.cpp_class}}& impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     {# FIXME: We might want to return undefined in some cases #}
     if (impl.isNull())
         return v8::Null(isolate);
 
     {% for member in container.members %}
     if (impl.is{{member.type_name}}())
         return {{member.cpp_value_to_v8_value}};
 
     {% endfor %}
     ASSERT_NOT_REACHED();
     return v8::Handle<v8::Value>();
 }
 
 {% endfor %}
 } // namespace blink