Assert the value of the properties and update the test frontmatter to include the `Symbol.iterator` feature.
Define tests for intrinsic Iterators under the appropriate subdirectory of `built-ins`.
These tests are derived from the following files within the Google V8 project: test/mjsunit/es6/typed-array-iterator.js test/mjsunit/es6/arguments-iterator.js test/mjsunit/es6/string-iterator.js test/mjsunit/es6/collection-iterator.js
These tests are derived from the following files within the Google V8 project: test/mjsunit/harmony/private.js
Mike Pennisi
Rick Waldron