[Line Layout API] Convert SVGTextLayoutEngine and SVGTextLayoutEngineBaseline to line Layout API

third_party/WebKit/Source/core/layout/svg/LayoutSVGInlineText.h

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  *
  * 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.
  *
@@ skipping 51 matching lines @@
 
     LayoutRect clippedOverflowRectForPaintInvalidation(const LayoutBoxModelObject* paintInvalidationContainer, const PaintInvalidationState*) const final;
 
     float m_scalingFactor;
     Font m_scaledFont;
     SVGTextLayoutAttributes m_layoutAttributes;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGInlineText, isSVGInlineText());
 
-class SVGInlineTextMetricsIterator {
-    DISALLOW_NEW();
-public:
-    SVGInlineTextMetricsIterator() { reset(nullptr); }
-
-    void advanceToTextStart(const LayoutSVGInlineText* textLayoutObject, unsigned startCharacterOffset)
-    {
-        ASSERT(textLayoutObject);
-        if (m_textLayoutObject != textLayoutObject) {
-            reset(textLayoutObject);
-            ASSERT(!metricsList().isEmpty());
-        }
-
-        if (m_characterOffset == startCharacterOffset)
-            return;
-
-        // TODO(fs): We could walk backwards through the metrics list in these cases.
-        if (m_characterOffset > startCharacterOffset)
-            reset(textLayoutObject);
-
-        while (m_characterOffset < startCharacterOffset)
-            next();
-    }
-
-    void next()
-    {
-        m_characterOffset += metrics().length();
-        ++m_metricsListOffset;
-    }
-
-    const SVGTextMetrics& metrics() const
-    {
-        ASSERT(m_textLayoutObject && m_metricsListOffset < metricsList().size());
-        return metricsList()[m_metricsListOffset];
-    }
-    const Vector<SVGTextMetrics>& metricsList() const { return m_textLayoutObject->layoutAttributes()->textMetricsValues(); }
-    unsigned metricsListOffset() const { return m_metricsListOffset; }
-    unsigned characterOffset() const { return m_characterOffset; }
-    bool isAtEnd() const { return m_metricsListOffset == metricsList().size(); }
-
-private:
-    void reset(const LayoutSVGInlineText* textLayoutObject)
-    {
-        m_textLayoutObject = textLayoutObject;
-        m_characterOffset = 0;
-        m_metricsListOffset = 0;
-    }
-
-    const LayoutSVGInlineText* m_textLayoutObject;
-    unsigned m_metricsListOffset;
-    unsigned m_characterOffset;
-};
-
 }
 
 #endif // LayoutSVGInlineText_h