Get popup appearing when suggesting new token

app/scripts/controllers/preferences.js

@@ -36,6 +36,7 @@ class PreferencesController {
     this.diagnostics = opts.diagnostics
 
     this.store = new ObservableStore(initState)
+    this.showAddTokenUi = opts.showAddTokenUi
   }
 // PUBLIC METHODS
 
@@ -79,7 +80,8 @@ class PreferencesController {
         symbol,
       }
 
-      this.suggestWatchToken()
+      this.addSuggestedToken(tokenOpts)
+      this.showAddTokenUi()
 
       return end(null, {
         result: rawAddress,

app/scripts/metamask-controller.js

@@ -85,6 +85,7 @@ module.exports = class MetamaskController extends EventEmitter {
     this.preferencesController = new PreferencesController({
       initState: initState.PreferencesController,
       initLangCode: opts.initLangCode,
+      showAddTokenUi: opts.showAddTokenUi,
     })
 
     // currency controller