Check visited color for visual diff.

Source/core/layout/style/LayoutStyle.cpp

Index: Source/core/layout/style/LayoutStyle.cpp
diff --git a/Source/core/layout/style/LayoutStyle.cpp b/Source/core/layout/style/LayoutStyle.cpp
index dffc38df541777fb9afcde630341b37d4ba0f70c..3915a94c7683873de695056165c52574f38d721e 100644
--- a/Source/core/layout/style/LayoutStyle.cpp
+++ b/Source/core/layout/style/LayoutStyle.cpp
@@ -696,6 +696,7 @@ void LayoutStyle::updatePropertySpecificDifferences(const LayoutStyle& other, St
 
     if (!diff.needsPaintInvalidation()) {
         if (inherited->color != other.inherited->color
+            || inherited->visitedLinkColor != other.inherited->visitedLinkColor
             || inherited_flags.m_textUnderline != other.inherited_flags.m_textUnderline
             || visual->textDecoration != other.visual->textDecoration) {
             diff.setTextOrColorChanged();