[Reland] Invalidate whitespace text on text color changes

third_party/WebKit/Source/core/layout/svg/LayoutSVGInlineText.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 143 matching lines @@
 
     const SVGCharacterDataMap::const_iterator it = m_layoutAttributes.characterDataMap().find(static_cast<unsigned>(position + 1));
     if (it == m_layoutAttributes.characterDataMap().end())
         return false;
 
     return !SVGTextLayoutAttributes::isEmptyValue(it->value.x) || !SVGTextLayoutAttributes::isEmptyValue(it->value.y);
 }
 
 PositionWithAffinity LayoutSVGInlineText::positionForPoint(const LayoutPoint& point)
 {
-    if (!firstTextBox() || !textLength())
+    if (!hasTextBoxes() || !textLength())
         return createPositionWithAffinity(0);
 
     ASSERT(m_scalingFactor);
     float baseline = m_scaledFont.fontMetrics().floatAscent() / m_scalingFactor;
 
     LayoutBlock* containingBlock = this->containingBlock();
     ASSERT(containingBlock);
 
     // Map local point to absolute point, as the character origins stored in the text fragments use absolute coordinates.
     FloatPoint absolutePoint(point);
@@ skipping 81 matching lines @@
 
 PassRefPtr<StringImpl> LayoutSVGInlineText::originalText() const
 {
     RefPtr<StringImpl> result = LayoutText::originalText();
     if (!result)
         return nullptr;
     return applySVGWhitespaceRules(result, style() && style()->whiteSpace() == PRE);
 }
 
 }