facebook/php-webdriver — pull request #119 by DaphDaOne (2014-01-20 14:47:35+00:00)
Title: Remove typehint string in `frameToBeAvailableAndSwitchToIt`

Type hints can not be used with scalar types such as int or string.

[See PHP documentation](http://www.php.net/manual/en/language.oop5.typehinting.php)