check-headers-self-sufficient: update

  * Translate to python, use multiprocessing to make it wun in reasonanble time.
  * Fix three headers.
  * Move one header.

Change-Id: I0b26f912bb8086ec158d1c0bae76b923ec6121a4
Reviewed-on: https://skia-review.googlesource.com/8490
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Hal Canary <halcanary@google.com>
6 files changed