Remove unused param in EventFilter::CreateConditionSets.

extensions/common/event_filter.h

 // Copyright (c) 2012 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.
 
 #ifndef EXTENSIONS_COMMON_EVENT_FILTER_H_
 #define EXTENSIONS_COMMON_EVENT_FILTER_H_
 
 #include <map>
 #include <memory>
 #include <set>
@@ skipping 76 matching lines @@
     DISALLOW_COPY_AND_ASSIGN(EventMatcherEntry);
   };
 
   // Maps from a matcher id to an event matcher entry.
   using EventMatcherMap =
       std::map<MatcherID, std::unique_ptr<EventMatcherEntry>>;
 
   // Maps from event name to the map of matchers that are registered for it.
   using EventMatcherMultiMap = std::map<std::string, EventMatcherMap>;
 
-  // Adds the list of URL filters in |matcher| to the URL matcher, having
-  // matches for those URLs map to |id|.
+  // Adds the list of URL filters in |matcher| to the URL matcher.
   bool CreateConditionSets(
-      MatcherID id,
       EventMatcher* matcher,
       url_matcher::URLMatcherConditionSet::Vector* condition_sets);
 
   bool AddDictionaryAsConditionSet(
       base::DictionaryValue* url_filter,
       url_matcher::URLMatcherConditionSet::Vector* condition_sets);
 
   url_matcher::URLMatcher url_matcher_;
   EventMatcherMultiMap event_matchers_;
 
@@ skipping 11 matching lines @@
 
   // Maps from event matcher ids to the name of the event they match on.
   std::map<MatcherID, std::string> id_to_event_name_;
 
   DISALLOW_COPY_AND_ASSIGN(EventFilter);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_EVENT_FILTER_H_