These changes are found after Cobalt rebased to V8 v8.8. Most changes
are grouped into their own CLs and here are the rest.
- Replace raw printf with PrintF
- Include Starboard as a platform for some implementations
- Add some missing headers. This is probably because Cobalt does
  not compile all of V8 sources so some missing headers are only exposed
  when compiling Cobalt.

Change-Id: Idf1512f57c37c8a63f79b1cf4ffc1da5d08421e2
Bug: v8:10927
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2966197
Auto-Submit: John Xu <johnx@google.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: John Xu <johnx@google.com>
Cr-Commit-Position: refs/heads/master@{#75376}