Added idlharness tests for Notifications API.
Use /resources/WebIDLParser.js
Add tests for hitregions (addHitRegion throws NotSupportedError)
tweak position of text
Fix output summary error of tools/runner/runner.js when the Status of last test tested is not 'PASS'
with the Subtest Pass Rate of last test being 'x/y' (the value of y is larger than 1).
Fix the bug of generating reftest by checking the value of 'rel' attribute of the 'link' element
whether equals "match" or "mismatch".
Uniq the reftest.
Add a test for IDBIndex count
Test the syntax aspect of the case-sensitivity selector
Replace tabs with spaces
Add a few more syntax cases
Added WebIDL for the callback itself
SImple invocation for requestAnimationFrame
cancelAnimationFrame does nothing
Remove doctype in quirks file
tests for definition construction algorithm
Add more tests
improving tests according to Dominic's notes
Don't check for TypeError here
Updated