Rearrange the Document interfaces to match the many specs

https://dom.spec.whatwg.org/#interface-document
https://html.spec.whatwg.org/#the-document-object
and many other specs with partial Document interfaces.

To make reviewing easier, this commit only changes the order of lines
and adds comments. Actual spec sync will be done separate.

The order of the generated code changes, but there are no actual
changes.

BUG=460722

Review URL: https://codereview.chromium.org/961693004

git-svn-id: svn://svn.chromium.org/blink/trunk@190981 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed
tree: da28435931ad1d200b5c068d5464cf16544c0b69
  1. third_party/