Compare font-feature-settings as part of Font::operator==().

third_party/WebKit/Source/platform/fonts/FontFeatureSettings.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 15 matching lines @@
 #include "platform/fonts/FontFeatureSettings.h"
 
 namespace blink {
 
 FontFeature::FontFeature(const AtomicString& tag, int value)
     : m_tag(tag)
     , m_value(value)
 {
 }
 
-bool FontFeature::operator==(const FontFeature& other)
+bool FontFeature::operator==(const FontFeature& other) const
 {
     return m_tag == other.m_tag && m_value == other.m_value;
 }
 
 FontFeatureSettings::FontFeatureSettings()
 {
 }
 
+bool FontFeatureSettings::operator==(const FontFeatureSettings& other) const
+{
+    return m_list == other.m_list;
+}
+
 } // namespace blink