Reviewer notes:
PS1 and PS2 handle everything up to the linking stage of the build
PS6 and PS7 are trivial renamings and rebases, diff between Base->PS5 for a cleaner review
No-Try: true
Change-Id: Ib21ce2e8839ecd4b4dd57280e82f56a98194e476
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/532765
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
