bindings: Make the sequence conversion code more complaint with WebIDL.

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

+// Copyright 2017 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 SequenceTest_h
+#define SequenceTest_h
+
+#include "bindings/core/v8/DoubleOrDoubleSequence.h"
+#include "bindings/core/v8/Nullable.h"
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "core/dom/Element.h"
+#include "platform/heap/Handle.h"
+#include "platform/wtf/Vector.h"
+#include "platform/wtf/text/WTFString.h"
+
+namespace blink {
+
+class SequenceTest final : public GarbageCollectedFinalized<SequenceTest>,
+                           public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  static SequenceTest* create() { return new SequenceTest; }
+  ~SequenceTest();
+
+  Vector<Vector<String>> identityByteStringSequenceSequence(
+      const Vector<Vector<String>>& arg) const;
+  Vector<double> identityDoubleSequence(const Vector<double>& arg) const;
+  Vector<String> identityFoodEnumSequence(const Vector<String>& arg) const;
+  Vector<int32_t> identityLongSequence(const Vector<int32_t>& arg) const;
+  Nullable<Vector<uint8_t>> identityOctetSequenceOrNull(
+      const Nullable<Vector<uint8_t>>& arg) const;
+
+  HeapVector<Member<Element>> getElementSequence() const;
+  void setElementSequence(const HeapVector<Member<Element>>& arg);
+
+  bool unionReceivedSequence(const DoubleOrDoubleSequence& arg);
+
+  DECLARE_TRACE();
+
+ private:
+  SequenceTest();
+
+  HeapVector<Member<Element>> m_elementSequence;
+};
+
+}  // namespace blink
+
+#endif  // SequenceTest_h