title: UITextField Height not changing when set as inputAccessoryView for another UITextField
body: <pre><code>var textF2 = UITextField()
  textF2.borderStyle = UITextBorderStyle.None
  textF2.frame.size = CGSizeMake(200, 200)
  textF2.text = self.textField.text
  textF2.backgroundColor = UIColor.whiteColor()
  
  self.textField.inputAccessoryView = textF2
  </code></pre>
  
  <p>textF2's height refuses to be set properly, atleast in terms of its appearance.</p>
  
  <pre><code>println(textF2.frame.size.height)
  </code></pre>
  
  <p>gives me the new value of 200 however it does not appear in the simulator that way.</p>
  
  <p>Does inputAccessoryView cause problems related to setting the height?</p>
  
  <pre><code>var textF2 = UITextField()
  textF2.borderStyle = UITextBorderStyle.None
  textF2.frame = CGRectMake(50, 50, 200, 200)
  textF2.text = self.textField.text
  textF2.backgroundColor = UIColor.whiteColor()
  self.view.addSubview(textF2)
  </code></pre>
  
  <p>does in fact give me proper appearance, so </p>
  
  <pre><code>self.textField.inputAccessoryView = textF2
  </code></pre>
  
  <p>is the problem. Does anybody know why?</p>