Extract shared filters and aliasing code

appengine/swarming/elements/res/imp/tasklist/task-list-data.html

 <!--
   Copyright 2016 The LUCI Authors. All rights reserved.
   Use of this source code is governed under the Apache License, Version 2.0
   that can be found in the LICENSE file.
 
   This in an HTML Import-able file that contains the definition
   of the following elements:
 
     <bot-list-data>
 
@@ skipping 23 matching lines @@
 
   Methods:
     signIn(): Force a signin of the user using OAuth.  This happens
         automatically when auth_headers is set.
 
   Events:
     None.
 -->
 
 <link rel="import" href="/res/imp/bower_components/iron-ajax/iron-ajax.html">
+<link rel="import" href="/res/imp/common/common-behavior.html">
 
 <dom-module id="task-list-data">
   <template>
     <iron-ajax id="tasklist"
        url="/_ah/api/swarming/v1/tasks/list"
        headers="[[auth_headers]]"
        params="[[query_params]]"
        handle-as="json"
        last-response="{{_list}}"
        loading="{{_busy1}}">
     </iron-ajax>
     <!-- TODO(kjlubick): Make more requests (like all tags) -->
 
   </template>
   <script>
   (function(){
     Polymer({
       is: 'task-list-data',
 
-      behaviors: [SwarmingBehaviors.SwarmingBehavior],
+      behaviors: [SwarmingBehaviors.CommonBehavior],
 
       properties: {
         // inputs
         auth_headers: {
           type: Object,
           observer: "signIn",
         },
         query_params: {
           type: Object,
         },
@@ skipping 22 matching lines @@
         if (!this._list || !this._list.items) {
           return [];
         }
         // Do any preprocessing here
         return this._list.items;
       }
     });
   })();
   </script>
 </dom-module>