start fleshing out some SRI tests
typo
Tests for AnimationNode methods
improving tests according review comments
improving tests according to review notes
Changes according review notes. AnimationNodeList has no forEach()
Add blackberry driver
Move addEventListener.optional.useCapture.html to dom/ and clean it up.
Move dispatchEvent.return.value.html to dom/ and clean it up.
event.ports in a dedicated worker should be empty array
Fix worker data: test pass condition. Fixes #475
Re-add a useful assertion in websockets. Fixes #522
worker postMessage(1, null) should throw, undefined should not. Fixes #491
Fix worker ErrorEvent test should use constructor and test non-support for legacy. Fixes #492
Use step_func in send-no-response-event-order.htm.
Remove VerifyResult from send-no-response-event-order.htm.

There's no point in this additional abstraction.
Don't use assert_array_equals
Check for TypeError
Merge pull request #1361 from Ms2ger/xhr-step

Cleanup send-no-response-event-order.htm; r=zcorpan
Merge pull request #1357 from zcorpan/fix-491

worker postMessage(1, null) should throw, undefined should not. Fixes #491; r=Ms2ger