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
Added a test for the iframe element sandbox attribute, allow-script
[TTWF Shanghai] Added idlharness test for FileAPI
add draggable_attribute, dropzone_attribute and dragevent TCs
Update FileAPI IDL to latest editor's draft
Add some cases for the embed element

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Refine tests for the embed element

- Add _manual suffix to reftest filename
- Add a reference file embed_represent_nothing_ref.html
- Remove embed_pass_parameters.html and embed_type_unmatch.html
  as not good design
Update according to the new template

1. Update the code format
2. Update the reference specification

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Update idlharness tests to reflect #388 cleanup
Add tests for document base URL

Base on section 2.5 URLs

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Resolve issues according to review comments

1. Rename files
2. Change titles
3. Remove the tests duplicate with reflection

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Add a test for Blob.close.
fixes on MS async tests + rm trailing ws
Remove some useless tests.
Move and rewrite Microsoft's test for the range input type.
Merge remote-tracking branch 'upstream/master' into ms-async
remove/update comments
decrease timeout
test refactoring