Some easy linked_ptr removal from extensions/common/

extensions/common/event_filter.cc

 // 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.
 
 #include "extensions/common/event_filter.h"
 
 #include <string>
 #include <utility>
 
+#include "base/memory/ptr_util.h"
 #include "components/url_matcher/url_matcher_factory.h"
 #include "ipc/ipc_message.h"
 
 using url_matcher::URLMatcher;
 using url_matcher::URLMatcherConditionSet;
 using url_matcher::URLMatcherFactory;
 
 namespace extensions {
 
 EventFilter::EventMatcherEntry::EventMatcherEntry(
@@ skipping 40 matching lines @@
   URLMatcherConditionSet::Vector condition_sets;
   if (!CreateConditionSets(id, matcher.get(), &condition_sets))
     return -1;
 
   for (URLMatcherConditionSet::Vector::iterator it = condition_sets.begin();
        it != condition_sets.end(); it++) {
     condition_set_id_to_event_matcher_id_.insert(
         std::make_pair((*it)->id(), id));
   }
   id_to_event_name_[id] = event_name;
-  event_matchers_[event_name][id] = linked_ptr<EventMatcherEntry>(
-      new EventMatcherEntry(std::move(matcher), &url_matcher_, condition_sets));
+  event_matchers_[event_name][id] = base::MakeUnique<EventMatcherEntry>(
+      std::move(matcher), &url_matcher_, condition_sets);
   return id;
 }
 
 EventMatcher* EventFilter::GetEventMatcher(MatcherID id) {
   DCHECK(id_to_event_name_.find(id) != id_to_event_name_.end());
   const std::string& event_name = id_to_event_name_[id];
   return event_matchers_[event_name][id]->event_matcher();
 }
 
 const std::string& EventFilter::GetEventName(MatcherID id) {
@@ skipping 96 matching lines @@
 
 int EventFilter::GetMatcherCountForEvent(const std::string& name) {
   EventMatcherMultiMap::const_iterator it = event_matchers_.find(name);
   if (it == event_matchers_.end())
     return 0;
 
   return it->second.size();
 }
 
 }  // namespace extensions