Changed Pair to be a CSSValue

Source/core/css/CSSValuePair.h

Index: Source/core/css/CSSValuePair.h
diff --git a/Source/core/css/CSSValuePair.h b/Source/core/css/CSSValuePair.h
new file mode 100644
index 0000000000000000000000000000000000000000..b429c66b4743620b3709d1dd127e99a3e31a049f
--- /dev/null
+++ b/Source/core/css/CSSValuePair.h
@@ -0,0 +1,87 @@
+/*
+ * (C) 1999-2003 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef CSSValuePair_h
+#define CSSValuePair_h
+
+#include "core/CoreExport.h"
+#include "core/css/CSSPrimitiveValue.h"
+#include "core/css/CSSValue.h"
+#include "core/style/ComputedStyle.h"
+#include "platform/Length.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
+#include "wtf/text/StringBuilder.h"
+
+namespace blink {
+
+class CORE_EXPORT CSSValuePair : public CSSValue {
+public:
+    enum IdenticalValuesPolicy { DropIdenticalValues, KeepIdenticalValues };
+
+    static PassRefPtrWillBeRawPtr<CSSValuePair> create(PassRefPtrWillBeRawPtr<CSSValue> first, PassRefPtrWillBeRawPtr<CSSValue> second,
+        IdenticalValuesPolicy identicalValuesPolicy)
+    {
+        return adoptRefWillBeNoop(new CSSValuePair(first, second, identicalValuesPolicy));
+    }
+
+    static PassRefPtrWillBeRawPtr<CSSValuePair> create(const LengthSize& lengthSize, const ComputedStyle& style)
+    {
+        return adoptRefWillBeNoop(new CSSValuePair(CSSPrimitiveValue::create(lengthSize.width(), style.effectiveZoom()), CSSPrimitiveValue::create(lengthSize.height(), style.effectiveZoom()), KeepIdenticalValues));
+    }
+
+    CSSValue* first() const { return m_first.get(); }
+    CSSValue* second() const { return m_second.get(); }
+
+    String customCSSText() const
+    {
+        String first = m_first->cssText();
+        String second = m_second->cssText();
+        if (m_identicalValuesPolicy == DropIdenticalValues && first == second)
+            return first;
+        return first + ' ' + second;
+    }
+
+    bool equals(const CSSValuePair& other) const
+    {
+        ASSERT(m_identicalValuesPolicy == other.m_identicalValuesPolicy);
+        return compareCSSValuePtr(m_first, other.m_first)
+            && compareCSSValuePtr(m_second, other.m_second);
+    }
+
+    DECLARE_TRACE_AFTER_DISPATCH();
+
+private:
+    CSSValuePair(PassRefPtrWillBeRawPtr<CSSValue> first, PassRefPtrWillBeRawPtr<CSSValue> second, IdenticalValuesPolicy identicalValuesPolicy)
+        : CSSValue(ValuePairClass)
+        , m_first(first)
+        , m_second(second)
+        , m_identicalValuesPolicy(identicalValuesPolicy) { }
+
+    RefPtrWillBeMember<CSSValue> m_first;
+    RefPtrWillBeMember<CSSValue> m_second;
+    IdenticalValuesPolicy m_identicalValuesPolicy;
+};
+
+DEFINE_CSS_VALUE_TYPE_CASTS(CSSValuePair, isValuePair());
+
+} // namespace
+
+#endif // CSSValuePair_h