Separate repaint and layout requirements of StyleDifference (Step 1)

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 71 matching lines @@
     if (oldPreserves && !newPreserves) {
         setText(applySVGWhitespaceRules(originalText(), false), true);
         return;
     }
 
     if (!oldPreserves && newPreserves) {
         setText(applySVGWhitespaceRules(originalText(), true), true);
         return;
     }
 
-    if (diff != StyleDifferenceLayout)
+    if (!diff.needsFullLayout())
         return;
 
     // The text metrics may be influenced by style changes.
     if (RenderSVGText* textRenderer = RenderSVGText::locateRenderSVGTextAncestor(this))
         textRenderer->setNeedsLayout();
 }
 
 InlineTextBox* RenderSVGInlineText::createTextBox()
 {
     InlineTextBox* box = new SVGInlineTextBox(*this);
@@ skipping 129 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());
 }
 
 }