Change calculate_line_height to use font-size from style.
Recycle use of a local variable and remove what seems to be 2 extraneous URL objects.
Bump submodule ptr for rust-url to fix make-check error.
Port element traits to use atoms instead of strings.
Merge pull request #2890 from glennw/font-size

Change calculate_line_height to use font-size from style.
Merge pull request #2891 from glennw/rust-url-check

Bump submodule ptr for rust-url to fix make-check error.
Merge pull request #2889 from Adenilson/cleanupURL01

Recycle use of URL local variable
Merge pull request #2892 from glennw/element-atom

Port element traits to use atoms instead of strings.