edx/edx-platform — pull request #3631 by jmclaus (2014-05-07 13:14:16+00:00)
Title: Added new error message that displays when HTML5 video is not supported. [BLD-638]

@valera-rozuvan @polesye Please have a look. Doesn't seem to work when Firefox flags are used to disable HTML5 video tag. What do you think? Maybe another way to implement _supportsHTML5Video?