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diff --git a/WebCore/rendering/svg/SVGTextLayoutEngine.h b/WebCore/rendering/svg/SVGTextLayoutEngine.h
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+++ b/WebCore/rendering/svg/SVGTextLayoutEngine.h
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+/*
+ * Copyright (C) Research In Motion Limited 2010. All rights reserved.
+ *
+ * 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 SVGTextLayoutEngine_h
+#define SVGTextLayoutEngine_h
+
+#if ENABLE(SVG)
+#include "Path.h"
+#include "SVGTextChunkBuilder.h"
+#include "SVGTextFragment.h"
+#include "SVGTextMetrics.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class RenderObject;
+class RenderStyle;
+class RenderSVGInlineText;
+class SVGElement;
+class SVGInlineTextBox;
+class SVGRenderStyle;
+
+// SVGTextLayoutEngine performs the second layout phase for SVG text.
+//
+// The InlineBox tree was created, containing the text chunk information, necessary to apply
+// certain SVG specific text layout properties (text-length adjustments and text-anchor).
+// The second layout phase uses the SVGTextLayoutAttributes stored in the individual
+// RenderSVGInlineText renderers to compute the final positions for each character
+// which are stored in the SVGInlineTextBox objects.
+
+class SVGTextLayoutEngine : public Noncopyable {
+public:
+    SVGTextLayoutEngine();
+    SVGTextChunkBuilder& chunkLayoutBuilder() { return m_chunkLayoutBuilder; }
+
+    void beginTextPathLayout(RenderObject*, SVGTextLayoutEngine& lineLayout);
+    void endTextPathLayout();
+
+    void layoutInlineTextBox(SVGInlineTextBox*);
+    void finishLayout();
+
+private:
+    void updateCharacerPositionIfNeeded(float& x, float& y);
+    void updateCurrentTextPosition(float x, float y, float glyphAdvance);
+    void updateRelativePositionAdjustmentsIfNeeded(Vector<float>& dxValues, Vector<float>& dyValues, unsigned valueListPosition);
+
+    void recordTextFragment(SVGInlineTextBox*, RenderSVGInlineText*, unsigned positionListOffset, const SVGTextMetrics& lastCharacterMetrics);
+    bool parentDefinesTextLength(RenderObject*) const;
+
+    void layoutTextOnLineOrPath(SVGInlineTextBox*, RenderSVGInlineText*, const RenderStyle*);
+    void finalizeTransformMatrices(Vector<SVGInlineTextBox*>&);
+
+private:
+    Vector<SVGInlineTextBox*> m_lineLayoutBoxes;
+    Vector<SVGInlineTextBox*> m_pathLayoutBoxes;
+    SVGTextChunkBuilder m_chunkLayoutBuilder;
+
+    SVGTextFragment m_currentTextFragment;
+    float m_x;
+    float m_y;
+    float m_dx;
+    float m_dy;
+    bool m_isVerticalText;
+    bool m_inPathLayout;
+
+    // Text on path layout
+    Path m_textPath;
+    float m_textPathLength;
+    float m_textPathStartOffset;
+    float m_textPathCurrentOffset;
+    float m_textPathSpacing;
+    float m_textPathScaling;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG)
+#endif