Fix incorrect style recalculation of text-decoration properties.

Source/core/rendering/style/AppliedTextDecoration.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 "config.h"
 #include "core/rendering/style/AppliedTextDecoration.h"
 
 namespace WebCore {
 
+AppliedTextDecoration::AppliedTextDecoration(TextDecoration line, TextDecorationStyle style, StyleColor color)
+    : m_line(line)
+    , m_style(style)
+    , m_color(color)
+{
+}
+
 AppliedTextDecoration::AppliedTextDecoration(TextDecoration line)
     : m_line(line)
+    , m_style(TextDecorationStyleSolid)
+    , m_color(StyleColor::currentColor())
 {
 }
 
 AppliedTextDecoration::AppliedTextDecoration()
     : m_line(TextDecorationUnderline)
+    , m_style(TextDecorationStyleSolid)
+    , m_color(StyleColor::currentColor())
 {
 }
 
 bool AppliedTextDecoration::operator==(const AppliedTextDecoration& o) const
 {
-    return m_line == o.m_line;
+    return m_color == o.m_color && m_line == o.m_line && m_style == o.m_style;
 }
 
 } // namespace WebCore