Revert "Revert "remove unneeded flag SK_SUPPORT_LEGACY_RECTMAKELARGEST""

No clients set this flag

This reverts commit c6471ebc67521a0d814b0548d419a4bd6d77222f.

Docs-Preview: https://skia.org/?cl=161151
Bug: skia:
Change-Id: I6100b9f26c588c68cde2172c021f6f3ebe71164f
Reviewed-on: https://skia-review.googlesource.com/c/161151
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
5 files changed