fix(protractor.wrapDriver): allow browser instances to work even if they were not set up through the runner

Fixes #2456

Author: sjelin

lib/protractor.js

@@ -7,6 +7,7 @@ var ElementArrayFinder = require('./element').ElementArrayFinder;
 var ElementFinder = require('./element').ElementFinder;
 var build$ = require('./element').build$;
 var build$$ = require('./element').build$$;
+var Plugins = require('./plugins');
 
 var clientSideScripts = require('./clientsidescripts.js');
 var ProtractorBy = require('./locators.js').ProtractorBy;
@@ -189,6 +190,13 @@ var Protractor = function(webdriverInstance, opt_baseUrl, opt_rootElement) {
    */
   this.ready = null;
 
+  /*
+   * Set by the runner.
+   *
+   * @type {Plugins} Object containing plugin funtions from config.
+   */
+  this.plugins_ = new Plugins({});
+
   /**
    * The reset URL to use between page loads.
    *

spec/basic/lib_spec.js

@@ -108,6 +108,11 @@ describe('protractor library', function() {
         toEqual('repeater');
   });
 
+  it('should allow self-wrapped webdriver instances', function() {
+    var driver = protractor.wrapDriver(browser.driver);
+    driver.get('https://angularjs.org/');
+  });
+
   describe('helper functions', function() {
     it('should get the absolute URL', function() {
       browser.get('index.html');