Cleanup: Start using toFoo methods as part of newly adopted coding guideline.

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 92 matching lines @@
     InlineTextBox* box = new SVGInlineTextBox(this);
     box->setHasVirtualLogicalHeight();
     return box;
 }
 
 LayoutRect RenderSVGInlineText::localCaretRect(InlineBox* box, int caretOffset, LayoutUnit*)
 {
     if (!box || !box->isInlineTextBox())
         return LayoutRect();
 
-    InlineTextBox* textBox = static_cast<InlineTextBox*>(box);
+    InlineTextBox* textBox = toInlineTextBox(box);
     if (static_cast<unsigned>(caretOffset) < textBox->start() || static_cast<unsigned>(caretOffset) > textBox->start() + textBox->len())
         return LayoutRect();
 
     // Use the edge of the selection rect to determine the caret rect.
     if (static_cast<unsigned>(caretOffset) < textBox->start() + textBox->len()) {
         LayoutRect rect = textBox->localSelectionRect(caretOffset, caretOffset + 1);
         LayoutUnit x = box->isLeftToRightDirection() ? rect.x() : rect.maxX();
         return LayoutRect(x, rect.y(), caretWidth, rect.height());
     }
 
@@ skipping 114 matching lines @@
     FontDescription fontDescription(style->fontDescription());
 
     // 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, 0, 0);
     scaledFont.update(styleResolver->fontSelector());
 }
 
 }