Reland "ccpr: Set atlas proxy size to draw bounds rather than backing size"

This is a reland of 46d0f9aad1e68b90774315ad09abe55dd8fe2fd9

Original change's description:
> ccpr: Set atlas proxy size to draw bounds rather than backing size
> 
> Bug: skia:
> Change-Id: I6605754ecc5377b1c25847fdda478f8246979a2f
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209808
> Commit-Queue: Chris Dalton <csmartdalton@google.com>
> Reviewed-by: Robert Phillips <robertphillips@google.com>

Bug: skia:
Change-Id: Ic13317fd021843961989a79050735c225702ad45
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211181
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
9 files changed