Order the API reference.

Docs-Preview: https://skia.org/?cl=105900

Change-Id: I8c514e5c1dc4f5612971f23676351bf2a0e3a135
Reviewed-on: https://skia-review.googlesource.com/105900
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
3 files changed