Remove gendered language

Bug: chromium:1101491
Bug: b/161896447

Found using

  git grep -wiEIl \ '(he)|(she)|(his)|(hers)|(him)|(her)|(guy)|(guys)'

Change-Id: I6b91853de067fd4c2e84f7ec70275522ce6c8bfc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306186
Commit-Queue: Leon Scroggins <scroggo@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
16 files changed