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diff --git a/Source/WebCore/mathml/MathMLSpaceElement.cpp b/Source/WebCore/mathml/MathMLSpaceElement.cpp
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+++ b/Source/WebCore/mathml/MathMLSpaceElement.cpp
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+/*
+ * Copyright (C) 2016 Igalia S.L. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "config.h"
+#include "MathMLSpaceElement.h"
+
+#if ENABLE(MATHML)
+
+#include "RenderMathMLSpace.h"
+
+namespace WebCore {
+
+using namespace MathMLNames;
+
+MathMLSpaceElement::MathMLSpaceElement(const QualifiedName& tagName, Document& document)
+    : MathMLPresentationElement(tagName, document)
+{
+}
+
+Ref<MathMLSpaceElement> MathMLSpaceElement::create(const QualifiedName& tagName, Document& document)
+{
+    return adoptRef(*new MathMLSpaceElement(tagName, document));
+}
+
+const MathMLElement::Length& MathMLSpaceElement::width()
+{
+    return cachedMathMLLength(MathMLNames::widthAttr, m_width);
+}
+
+const MathMLElement::Length& MathMLSpaceElement::height()
+{
+    return cachedMathMLLength(MathMLNames::heightAttr, m_height);
+}
+
+const MathMLElement::Length& MathMLSpaceElement::depth()
+{
+    return cachedMathMLLength(MathMLNames::depthAttr, m_depth);
+}
+
+void MathMLSpaceElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
+{
+    if (name == widthAttr)
+        m_width = std::nullopt;
+    else if (name == heightAttr)
+        m_height = std::nullopt;
+    else if (name == depthAttr)
+        m_depth = std::nullopt;
+
+    MathMLPresentationElement::parseAttribute(name, value);
+}
+
+RenderPtr<RenderElement> MathMLSpaceElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
+{
+    ASSERT(hasTagName(MathMLNames::mspaceTag));
+    return createRenderer<RenderMathMLSpace>(*this, WTFMove(style));
+}
+
+}
+
+#endif // ENABLE(MATHML)