Pass start/length at InlineTextBox construction time.

Source/core/rendering/RenderText.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2009, 2013 Apple Inc. 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.
  *
@@ skipping 42 matching lines @@
     virtual PassRefPtr<StringImpl> originalText() const;
 
     void extractTextBox(InlineTextBox*);
     void attachTextBox(InlineTextBox*);
     void removeTextBox(InlineTextBox*);
 
     const String& text() const { return m_text; }
     virtual unsigned textStartOffset() const { return 0; }
     String plainText() const;
 
-    InlineTextBox* createInlineTextBox();
+    InlineTextBox* createInlineTextBox(int start, unsigned short length);
     void dirtyLineBoxes(bool fullLayout);
 
     virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const OVERRIDE FINAL;
     void absoluteRectsForRange(Vector<IntRect>&, unsigned startOffset = 0, unsigned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = 0);
 
     virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const OVERRIDE FINAL;
     void absoluteQuadsForRange(Vector<FloatQuad>&, unsigned startOffset = 0, unsigned endOffset = INT_MAX, bool useSelectionHeight = false, bool* wasFixed = 0);
 
     enum ClippingOption { NoClipping, ClipToEllipsis };
     void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed = 0, ClippingOption = NoClipping) const;
@@ skipping 69 matching lines @@
     virtual void willBeDestroyed() OVERRIDE;
 
     virtual void styleWillChange(StyleDifference, const RenderStyle&) OVERRIDE FINAL { }
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
 
     virtual void setTextInternal(PassRefPtr<StringImpl>);
     virtual UChar previousCharacter() const;
 
     virtual void addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const OVERRIDE;
 
-    virtual InlineTextBox* createTextBox(); // Subclassed by SVG.
+    virtual InlineTextBox* createTextBox(int start, unsigned short length); // Subclassed by SVG.
 
 private:
     void computePreferredLogicalWidths(float leadWidth);
     void computePreferredLogicalWidths(float leadWidth, HashSet<const SimpleFontData*>& fallbackFonts, GlyphOverflow&);
 
     bool computeCanUseSimpleFontCodePath() const;
 
     // Make length() private so that callers that have a RenderText*
     // will use the more efficient textLength() instead, while
     // callers with a RenderObject* can continue to use length().
@@ skipping 74 matching lines @@
 inline RenderText* Text::renderer() const
 {
     return toRenderText(CharacterData::renderer());
 }
 
 void applyTextTransform(const RenderStyle*, String&, UChar);
 
 } // namespace blink
 
 #endif // RenderText_h