Reland: Generate separate files for union type containers

third_party/WebKit/Source/core/testing/DictionaryTest.h

 // 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.
 
 #ifndef DictionaryTest_h
 #define DictionaryTest_h
 
+#include "bindings/core/v8/DoubleOrString.h"
 #include "bindings/core/v8/Nullable.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
-#include "bindings/core/v8/UnionTypesCore.h"
 #include "core/dom/Element.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashMap.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class InternalDictionary;
 class InternalDictionaryDerived;
 
@@ skipping 60 matching lines @@
     Member<EventTarget> m_eventTargetOrNullMember;
     String m_derivedStringMember;
     String m_derivedStringMemberWithDefault;
     bool m_requiredBooleanMember;
     Nullable<HashMap<String, String>> m_dictionaryMemberProperties;
 };
 
 } // namespace blink
 
 #endif // DictionaryTest_h