document: Use ElementCreationOptions in Document.createElement()

We used (DOMString or Dictionary) type for |option| parameter,
but this CL replaces it with (DOMString or ElementCreationOpitons)
as the spec defined.


Bug: 904241
Change-Id: I9416af83168e7c1f7456ffdbd3141fa97b510706
Reviewed-on: https://chromium-review.googlesource.com/c/1333094
Commit-Queue: Hitoshi Yoshida <peria@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608668}
6 files changed