title: undefined property 'bind' when using expected conditions
body: <p>I'm trying to use the expected conditions function to make protractor wait for the presence of items on a page before continuing.</p>
  
  <p><a href="http://angular.github.io/protractor/#/api?view=ExpectedConditions" rel="noreferrer">http://angular.github.io/protractor/#/api?view=ExpectedConditions</a></p>
  
  <p>I have followed the example in the docs, but I am getting an error about an undefined property.</p>
  
  <p>This seems to be the case when using any expected condition, not just related to the presenceOf function I am using here:</p>
  
  <pre><code>var EC = protractor.ExpectedConditions
  var pixels = element.all(by.repeater('item in items'))
  var pixelsLoaded = EC.presenceOf(pixels)
  
  browser.wait(pixelsLoaded,10000)
  </code></pre>
  
  <blockquote>
    <p>Failed: Cannot read property 'bind' of undefined
      Stack:
        TypeError: Cannot read property 'bind' of undefined
            at [object Object].ExpectedConditions.presenceOf (/foo/bar/node_modules/gulp-protractor/node_modules/protractor/lib/expectedConditions.js:233:33)
            at Env. (/foo/bar/app/features/pixelmanager/test/pixelManagerPOTest.js:48:31)
            at /foo/bar/node_modules/gulp-protractor/node_modules/protractor/node_modules/jasminewd2/index.js:95:14
            at [object Object].promise.ControlFlow.runInFrame_ (/foo/bar/node_modules/gulp-protractor/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:1877:20)
            at [object Object].promise.ControlFlow.runEventLoop_ (/foo/bar/node_modules/gulp-protractor/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:1755:8)
            at [object Object]. (/foo/bar/node_modules/gulp-protractor/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:2056:12)
            at goog.async.run.processWorkQueue (/foo/bar/node_modules/gulp-protractor/node_modules/protractor/node_modules/selenium-webdriver/lib/goog/async/run.js:125:21)
            at runMicrotasksCallback (node.js:337:7)
            at process._tickCallback (node.js:355:11)
        From: Task: Run it in control flow
            at Object. (/foo/bar/node_modules/gulp-protractor/node_modules/protractor/node_modules/jasminewd2/index.js:94:33)
        ==== async task ====
        Error
            at Suite. (/foo/bar/app/features/pixelmanager/test/pixelManagerPOTest.js:44:5)
            at Object. (/foo/bar/app/features/pixelmanager/test/pixelManagerPOTest.js:9:1)
            at Module._compile (module.js:460:26)
            at Object.Module._extensions..js (module.js:478:10)
            at Module.load (module.js:355:32)
            at Function.Module._load (module.js:310:12)</p>
  </blockquote>