Proper support for multiple text decorations.

Source/wtf/RefVector.h

Index: Source/wtf/RefVector.h
diff --git a/Source/wtf/RefVector.h b/Source/wtf/RefVector.h
new file mode 100644
index 0000000000000000000000000000000000000000..1ba8c996e47373bca570bcf2afac02e8cde4ec5c
--- /dev/null
+++ b/Source/wtf/RefVector.h
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+// 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 RefVector_h
+#define RefVector_h
+
+#include "wtf/RefCounted.h"
+#include "wtf/RefPtr.h"
+#include "wtf/Vector.h"
+
+namespace WebCore {
+
+template <typename T>
+class RefVector : public RefCounted<RefVector<T> > {
+public:
+    static PassRefPtr<RefVector> create() { return adoptRef(new RefVector<T>); }
+    PassRefPtr<RefVector> copy() { return adoptRef(new RefVector<T>(*this)); }
+
+    const T& operator[](size_t i) const { return m_vector[i]; }
+    T& operator[](size_t i) { return m_vector[i]; }
+
+    bool operator==(const RefVector& o) const { return m_vector == o.m_vector; }
+    bool operator!=(const RefVector& o) const { return m_vector != o.m_vector; }
+
+    size_t size() const { return m_vector.size(); }
+    void append(const T& decoration) { m_vector.append(decoration); }
+    const Vector<T>& vector() const { return m_vector; }
+
+private:
+    Vector<T> m_vector;
+    RefVector() { }
+    RefVector(const RefVector& o) : m_vector(o.m_vector) { }
+};
+
+} // namespace WebCore
+
+#endif // RefVector_h