[webdriver-tests] Add some tests for WebDriver executeScript (section 11.2.1) (#704)

Add some tests for WebDriver executeScript (section 11.2.1)
Reorganizes tests to reflect current spec language.

View on GitHub: https://github.com/w3c/web-platform-tests/pull/704

Received on Wednesday, 26 February 2014 23:34:58 UTC