Adjust color for printing list-item markers as we do for text.

third_party/WebKit/Source/core/paint/TextPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/TextPainter.h"
 
 #include "core/CSSPropertyNames.h"
 #include "core/frame/Settings.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutTextCombine.h"
@@ skipping 91 matching lines @@
             context.setStrokeThickness(textStyle.strokeWidth);
     }
 
     if (textStyle.shadow) {
         if (!stateSaver.saved())
             stateSaver.save();
         context.setDrawLooper(textStyle.shadow->createDrawLooper(DrawLooperBuilder::ShadowIgnoresAlpha, textStyle.currentColor, horizontal));
     }
 }
 
-static Color textColorForWhiteBackground(Color textColor)
+Color TextPainter::textColorForWhiteBackground(Color textColor)
 {
     int distanceFromWhite = differenceSquared(textColor, Color::white);
     // semi-arbitrarily chose 65025 (255^2) value here after a few tests;
     return distanceFromWhite > 65025 ? textColor : textColor.dark();
 }
 
 // static
 TextPainter::Style TextPainter::textPaintingStyle(LineLayoutItem lineLayoutItem, const ComputedStyle& style, const PaintInfo& paintInfo)
 {
     TextPainter::Style textStyle;
@@ skipping 100 matching lines @@
     TextRun placeholderTextRun(&ideographicFullStopCharacter, 1);
     FloatPoint emphasisMarkTextOrigin(m_textBounds.x().toFloat(), m_textBounds.y().toFloat() + m_font.getFontMetrics().ascent() + m_emphasisMarkOffset);
     TextRunPaintInfo textRunPaintInfo(placeholderTextRun);
     textRunPaintInfo.bounds = FloatRect(m_textBounds);
     m_graphicsContext.concatCTM(rotation(m_textBounds, Clockwise));
     m_graphicsContext.drawEmphasisMarks(m_combinedText->originalFont(), textRunPaintInfo, m_emphasisMark, emphasisMarkTextOrigin);
     m_graphicsContext.concatCTM(rotation(m_textBounds, Counterclockwise));
 }
 
 } // namespace blink