interest and keyword workers in WorkerFactory

lib/WorkerFactory.js

@@ -87,7 +87,7 @@ WorkerFactory.prototype = {
     }
   },
 
-  _setupWorker: function(modelName) {
+  _setupInterestsWorker: function(modelName) {
     let scriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader);
     scriptLoader.loadSubScript(data.url("models/" + this._localeCode + "/" + modelName + "/domainRules.json"));
     scriptLoader.loadSubScript(data.url("models/" + this._localeCode + "/" + modelName + "/textModel.json"));
@@ -117,7 +117,29 @@ WorkerFactory.prototype = {
     let workers = [];
     let {modelNames} = this._localeData;
     modelNames.forEach(modelName => {
-      workers.push(this._setupWorker(modelName));
+      workers.push(this._setupInterestsWorker(modelName));
+    });
+    return workers;
+  },
+
+  _setupKeywordsWorker: function(modelName) {
+    let scriptLoader = Cc["@mozilla.org/moz/jssubscript-loader;1"].getService(Ci.mozIJSSubScriptLoader);
+    scriptLoader.loadSubScript(data.url("models/urlStopwords.json"));
+
+    let worker = new ChromeWorker(data.url("interests/keywordsWorker.js"));
+    worker.postMessage({
+      message: "bootstrap",
+      workerRegionCode: this._localeCode,
+      urlStopwordSet: interestsUrlStopwords
+    });
+    return worker;
+  },
+
+  getKeywordsWorkers: function() {
+    let workers = [];
+    let {modelNames} = this._localeData;
+    modelNames.forEach(modelName => {
+      workers.push(this._setupKeywordsWorker(modelName));
     });
     return workers;
   },