Run clang-modernize -use-nullptr over src/extensions/.

extensions/common/event_matcher.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_matcher.h"
 
 #include "extensions/common/event_filtering_info.h"
 
 namespace {
 const char kUrlFiltersKey[] = "url";
@@ skipping 17 matching lines @@
   if (event_info.has_instance_id()) {
     return event_info.instance_id() == GetInstanceID();
   }
 
   const std::string& service_type_filter = GetServiceTypeFilter();
   return service_type_filter.empty() ||
          service_type_filter == event_info.service_type();
 }
 
 int EventMatcher::GetURLFilterCount() const {
-  base::ListValue* url_filters = NULL;
+  base::ListValue* url_filters = nullptr;
   if (filter_->GetList(kUrlFiltersKey, &url_filters))
     return url_filters->GetSize();
   return 0;
 }
 
 bool EventMatcher::GetURLFilter(int i, base::DictionaryValue** url_filter_out) {
-  base::ListValue* url_filters = NULL;
+  base::ListValue* url_filters = nullptr;
   if (filter_->GetList(kUrlFiltersKey, &url_filters)) {
     return url_filters->GetDictionary(i, url_filter_out);
   }
   return false;
 }
 
 int EventMatcher::HasURLFilters() const {
   return GetURLFilterCount() != 0;
 }
 
 std::string EventMatcher::GetServiceTypeFilter() const {
   std::string service_type_filter;
   filter_->GetStringASCII(kEventFilterServiceTypeKey, &service_type_filter);
   return service_type_filter;
 }
 
 int EventMatcher::GetInstanceID() const {
   int instance_id = 0;
   filter_->GetInteger("instanceId", &instance_id);
   return instance_id;
 }
 
 int EventMatcher::GetRoutingID() const {
   return routing_id_;
 }
 
 }  // namespace extensions