Always (pre)compute path bounds when using a builder

Change-Id: I42ce8d2c7e6852a85b3aa798c772a2a0b1ce6c3b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/313477
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
4 files changed