Refactor out reusable pieces from new Botlist

appengine/swarming/elements/res/imp/botlist/bot-list-shared.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.
 
   window.SwarmingBehaviors.BotListBehavior contains any shared functions and
   constants used by the bot-list and its sub-elements.
 
   To use it, include
       behaviors: [SwarmingBehaviors.BotListBehavior]
   in the creation of your Polymer element.
 -->
+<link rel="import" href="/res/imp/common/swarming-app.html">
 <script>
-
-  window.SwarmingBehaviors = window.SwarmingBehaviors || {};
   (function(){
     var ANDROID_ALIASES = {
       "bullhead": "Nexus 5X",
       "flo": "Nexus 7 (2013)",
       "flounder": "Nexus 9",
       "foster": "NVIDIA Shield",
       "fugu": "Nexus Player",
       "grouper": "Nexus 7 (2012)",
       "hammerhead": "Nexus 5",
       "m0": "Galaxy S3",
@@ skipping 35 matching lines @@
       "8086:0a2e": "Intel Haswell Integrated",
       "8086:0d26": "Intel Crystal Well Integrated",
       "8086:22b1": "Intel Braswell Integrated",
     }
 
     // For consistency, all aliases are displayed like:
     // Nexus 5X (bullhead)
     // This regex matches a string like "ALIAS (ORIG)", with ORIG as group 1.
     var ALIAS_REGEXP = /.+ \((.*)\)/;
 
-    // This behavior wraps up all the shared bot-list functionality.
-    SwarmingBehaviors.BotListBehavior = {
+    // This behavior wraps up all the shared bot-list functionality by
+    // extending SwarmingBehaviors.SwarmingBehavior
+    SwarmingBehaviors.BotListBehavior = [SwarmingBehaviors.SwarmingBehavior, {
 
       properties: {
         DIMENSIONS_WITH_ALIASES: {
           type: Array,
           value: function(){
             return ["device_type", "gpu"];
           },
         },
         BOT_PROPERTIES: {
           type: Array,
@@ skipping 54 matching lines @@
             return bot.dimensions[i].value;
           }
         }
         return undefined;
       },
 
       _gpuAlias: function(gpu) {
         return GPU_ALIASES[gpu] || UNKNOWN;
       },
 
-      _not: function(a) {
-        return !a;
-      },
-
-      _or: function() {
-        var result = false;
-        // can't use .foreach, as arguments isn't really a function.
-        for (var i = 0; i < arguments.length; i++) {
-          result = result || arguments[i];
-        }
-        return result;
-      },
-
       // _state returns the requested attribute from a bot's state.
       // For consistency with _dimension, if the attribute is not an array,
       // it is put as the only element in an array.
       _state: function(bot, attr) {
         if (!bot || !bot.state || !bot.state[attr]) {
           return undefined
         }
         var state = bot.state[attr];
         if (Array.isArray(state)) {
           return state;
@@ skipping 10 matching lines @@
 
       // _unalias will return the base dimension/state with its alias removed
       // if it had one.  This is handy for sorting and filtering.
       _unalias: function(str) {
         var match = ALIAS_REGEXP.exec(str);
         if (match) {
           return match[1];
         }
         return str;
       },
-    }
+    }];
   })()
 </script>