Enforce IWYU on SkSerialProcs.h and SkGlyphRunPainter.h

This also rewrites the procs to use "using" instead of typedef
which is preferred by the style guide [1] (and this author).

[1] https://google.github.io/styleguide/cppguide.html#Aliases

Change-Id: If691918d7cc740e985bf6a59cca557527e536b57
Bug: skia:13052
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/663618
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
15 files changed