Add tests for structured clone for workers
new test files from TestTWF
add a comment clarifying where  is defined
Updated the tests with the recommended changes
add test for setSelectionRange method
add test case title
Added basic set of HTML Imports test.
Moved metadata from JS to link element
add input-type-button test files from TestTWF
Get rid of bad self-closing tags.
Merged redundant assert sections to titles.
new test for setRequestHeader() and open()
First batch of i18n tests: translate mode
Updated translate attribute tests
Second update of translate attribute tests
Added a test for the iframe element sandbox attribute, allow-script
shadow-dom: Update a test that checks invariants across distribution.
add blob determing encoding
fix the link
remove unreferenced file Blob.js