Pass start/length at InlineTextBox construction time.

Source/core/rendering/svg/RenderSVGInlineText.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * 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
@@ skipping 80 matching lines @@
     }
 
     if (!diff.needsFullLayout())
         return;
 
     // The text metrics may be influenced by style changes.
     if (RenderSVGText* textRenderer = RenderSVGText::locateRenderSVGTextAncestor(this))
         textRenderer->setNeedsLayoutAndFullPaintInvalidation();
 }
 
-InlineTextBox* RenderSVGInlineText::createTextBox()
+InlineTextBox* RenderSVGInlineText::createTextBox(int start, unsigned short length)
 {
-    InlineTextBox* box = new SVGInlineTextBox(*this);
+    InlineTextBox* box = new SVGInlineTextBox(*this, start, length);
     box->setHasVirtualLogicalHeight();
     return box;
 }
 
 LayoutRect RenderSVGInlineText::localCaretRect(InlineBox* box, int caretOffset, LayoutUnit*)
 {
     if (!box || !box->isInlineTextBox())
         return LayoutRect();
 
     InlineTextBox* textBox = toInlineTextBox(box);
@@ skipping 119 matching lines @@
 
     Document& document = renderer->document();
     // FIXME: We need to better handle the case when we compute very small fonts below (below 1pt).
     fontDescription.setComputedSize(FontSize::getComputedSizeFromSpecifiedSize(&document, scalingFactor, fontDescription.isAbsoluteSize(), fontDescription.specifiedSize(), DoNotUseSmartMinimumForFontSize));
 
     scaledFont = Font(fontDescription);
     scaledFont.update(document.styleEngine()->fontSelector());
 }
 
 }