IDL: Put generated union type containers in separate files

Source/bindings/tests/results/core/NodeOrNodeList.h

+// Copyright 2015 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_v8.py. DO NOT MODIFY!
+
+#ifndef NodeOrNodeList_h
+#define NodeOrNodeList_h
+
+#include "bindings/core/v8/Dictionary.h"
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8Node.h"
+#include "bindings/core/v8/V8NodeList.h"
+#include "core/dom/NameNodeList.h"
+#include "core/dom/NodeList.h"
+#include "core/dom/StaticNodeList.h"
+#include "core/html/LabelsNodeList.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class NodeOrNodeList final {
+    ALLOW_ONLY_INLINE_ALLOCATION();
+public:
+    NodeOrNodeList();
+    bool isNull() const { return m_type == SpecificTypeNone; }
+
+    bool isNode() const { return m_type == SpecificTypeNode; }
+    PassRefPtrWillBeRawPtr<Node> getAsNode() const;
+    void setNode(PassRefPtrWillBeRawPtr<Node>);
+    static NodeOrNodeList fromNode(PassRefPtrWillBeRawPtr<Node>);
+
+    bool isNodeList() const { return m_type == SpecificTypeNodeList; }
+    PassRefPtrWillBeRawPtr<NodeList> getAsNodeList() const;
+    void setNodeList(PassRefPtrWillBeRawPtr<NodeList>);
+    static NodeOrNodeList fromNodeList(PassRefPtrWillBeRawPtr<NodeList>);
+
+    DECLARE_TRACE();
+
+private:
+    enum SpecificTypes {
+        SpecificTypeNone,
+        SpecificTypeNode,
+        SpecificTypeNodeList,
+    };
+    SpecificTypes m_type;
+
+    RefPtrWillBeMember<Node> m_node;
+    RefPtrWillBeMember<NodeList> m_nodeList;
+
+    friend v8::Local<v8::Value> toV8(const NodeOrNodeList&, v8::Local<v8::Object>, v8::Isolate*);
+};
+
+class V8NodeOrNodeList final {
+public:
+    static void toImpl(v8::Isolate*, v8::Local<v8::Value>, NodeOrNodeList&, ExceptionState&);
+};
+
+v8::Local<v8::Value> toV8(const NodeOrNodeList&, v8::Local<v8::Object>, v8::Isolate*);
+
+template <class CallbackInfo>
+inline void v8SetReturnValue(const CallbackInfo& callbackInfo, NodeOrNodeList& impl)
+{
+    v8SetReturnValue(callbackInfo, toV8(impl, callbackInfo.Holder(), callbackInfo.GetIsolate()));
+}
+
+template <>
+struct NativeValueTraits<NodeOrNodeList> {
+    static NodeOrNodeList nativeValue(const v8::Local<v8::Value>&, v8::Isolate*, ExceptionState&);
+};
+
+} // namespace blink
+
+#endif // NodeOrNodeList_h