add 'slow' prefix to RenderObject's firstChild() / lastChild() methods

Source/core/rendering/svg/SVGTextMetricsBuilder.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010-2012. 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.
  */
 
 #include "config.h"
 
 #include "core/rendering/svg/SVGTextMetricsBuilder.h"
 
+#include "core/rendering/svg/RenderSVGInline.h"
 #include "core/rendering/svg/RenderSVGInlineText.h"
 #include "core/rendering/svg/RenderSVGText.h"
 #include "core/rendering/svg/SVGTextMetrics.h"
 #include "platform/fonts/WidthIterator.h"
 #include "platform/text/BidiCharacterRun.h"
 #include "platform/text/BidiResolver.h"
 #include "platform/text/TextDirection.h"
 #include "platform/text/TextPath.h"
 #include "platform/text/TextRun.h"
 #include "platform/text/TextRunIterator.h"
@@ skipping 193 matching lines @@
 
         data->lastCharacterWasWhiteSpace = characterIsWhiteSpace;
     }
 
     if (!data->allCharactersMap)
         return;
 
     data->valueListPosition += textPosition - skippedCharacters;
 }
 
-static void walkTree(RenderObject* start, RenderSVGInlineText* stopAtLeaf, MeasureTextData* data)
+static void walkTree(RenderSVGText* start, RenderSVGInlineText* stopAtLeaf, MeasureTextData* data)
 {
     RenderObject* child = start->firstChild();
     while (child) {
         if (child->isSVGInlineText()) {
             RenderSVGInlineText* text = toRenderSVGInlineText(child);
             measureTextRenderer(text, data, !stopAtLeaf || stopAtLeaf == text);
             if (stopAtLeaf && stopAtLeaf == text)
                 return;
         } else if (child->isSVGInline()) {
             // Visit children of text content elements.
-            if (RenderObject* inlineChild = child->firstChild()) {
+            if (RenderObject* inlineChild = toRenderSVGInline(child)->firstChild()) {
                 child = inlineChild;
                 continue;
             }
         }
         child = child->nextInPreOrderAfterChildren(start);
     }
 }
 
 void SVGTextMetricsBuilder::measureTextRenderer(RenderSVGInlineText* text)
 {
     ASSERT(text);
 
     RenderSVGText* textRoot = RenderSVGText::locateRenderSVGTextAncestor(text);
     if (!textRoot)
         return;
 
     MeasureTextData data(0);
     walkTree(textRoot, text, &data);
 }
 
 void SVGTextMetricsBuilder::buildMetricsAndLayoutAttributes(RenderSVGText* textRoot, RenderSVGInlineText* stopAtLeaf, SVGCharacterDataMap& allCharactersMap)
 {
     ASSERT(textRoot);
     MeasureTextData data(&allCharactersMap);
     walkTree(textRoot, stopAtLeaf, &data);
 }
 
 }