introduce a utils helper for prototype inheritance

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/completion.js b/lib/completion.js
index 6aec9e83..3c43f28b 100644
--- a/lib/completion.js
+++ b/lib/completion.js
@@ -410,7 +410,7 @@ var completion = (function() {
     AsyncFuzzyUrlCompleter.call(this);
     this.maxResults = maxResults || 1000;
   }
-  FuzzyHistoryCompleter.prototype = new AsyncFuzzyUrlCompleter;
+  utils.extend(AsyncFuzzyUrlCompleter, FuzzyHistoryCompleter);
   FuzzyHistoryCompleter.prototype.refresh = function() {
     this.resetCache();
     this.fetchFromPort('getHistory', { maxResults: this.maxResults }, function(msg) {
@@ -424,7 +424,7 @@ var completion = (function() {
   var FuzzyBookmarkCompleter = function() {
     AsyncFuzzyUrlCompleter.call(this);
   }
-  FuzzyBookmarkCompleter.prototype = new AsyncFuzzyUrlCompleter;
+  utils.extend(AsyncFuzzyUrlCompleter, FuzzyBookmarkCompleter);
   FuzzyBookmarkCompleter.prototype.refresh = function() {
     this.resetCache();
     this.fetchFromPort('getAllBookmarks', {}, function(msg) {
@@ -439,7 +439,7 @@ var completion = (function() {
   var FuzzyTabCompleter = function() {
     AsyncFuzzyUrlCompleter.call(this);
   }
-  FuzzyTabCompleter.prototype = new AsyncFuzzyUrlCompleter;
+  utils.extend(AsyncFuzzyUrlCompleter, FuzzyTabCompleter);
   FuzzyTabCompleter.prototype.createAction = function(match) {
     var open = function() {
       chrome.extension.sendRequest({ handler: 'selectSpecificTab', id: match.tab.id });