[Media Router] Add MediaSink subtypes

chrome/browser/media/router/media_sink.cc

 // Copyright 2015 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 "base/i18n/string_compare.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/media/router/media_sink.h"
 #include "third_party/icu/source/i18n/unicode/coll.h"
 
 namespace media_router {
 
 MediaSink::MediaSink(const MediaSink::Id& sink_id,
                      const std::string& name,
                      const MediaSink::IconType icon_type)
     : sink_id_(sink_id), name_(name), icon_type_(icon_type) {}
 
 MediaSink::MediaSink(const MediaSink& other) = default;
 
 MediaSink::MediaSink() {}
 
 MediaSink::~MediaSink() {
 }
 
 bool MediaSink::Equals(const MediaSink& other) const {
   return sink_id_ == other.sink_id_;
 }
 
+bool MediaSink::operator==(const MediaSink& other) const {
+  return sink_id_ == other.sink_id_ && name_ == other.name_ &&
+         description_ == other.description_ && domain_ == other.domain_ &&
+         icon_type_ == other.icon_type_;
+}
+
+bool MediaSink::operator!=(const MediaSink& other) const {
+  return !operator==(other);
+}
+
 bool MediaSink::CompareUsingCollator(const MediaSink& other,
                                      const icu::Collator* collator) const {
   if (icon_type_ != other.icon_type_)
     return icon_type_ < other.icon_type_;
 
   if (collator) {
     base::string16 this_name = base::UTF8ToUTF16(name_);
     base::string16 other_name = base::UTF8ToUTF16(other.name_);
     UCollationResult result = base::i18n::CompareString16WithCollator(
         *collator, this_name, other_name);
     if (result != UCOL_EQUAL)
       return result == UCOL_LESS;
   } else {
     // Fall back to simple string comparison if collator is not
     // available.
     int val = name_.compare(other.name_);
     if (val)
       return val < 0;
   }
 
   return sink_id_ < other.sink_id_;
 }
 
 }  // namespace media_router