setHeader does not work with SSL requests (IE 9 / Chrome)

[pmeenan]

What steps will reproduce the problem?

1. Select either IE9 or Chrome for your browser.
2. Create a script using:
   • setHeader HeaderKey: HeaderValue
   • navigate https://fedoraproject.org

What is the expected output? What do you see instead?
Expected that when you drill into the results you see on the request headers the values "HeaderKey: HeaderValue". This only appears when selecting FireFox. When either IE 9 or Chrome are selected, the Headers are not added.

What version of the product are you using? On what operating system?
WPTDriver, WPT 2.11 (356), Windows 2008r1, IE 9, Chrome, FF

Please provide any additional information below.
This does work if you select an HTTP site.

https://code.google.com/p/webpagetest/issues/detail?id=165