[vello] Enable the bump allocation estimator

The bump allocation estimator computes a conservative estimate of the
required buffer allocations based on heuristics over the encoded path
data. See the description of vello PR #454 for some examples scenes and
the current factors of overestimation: https://github.com/linebender/vello/pull/454

Bug: b/285193099
Change-Id: I131305914307591ad04d6158f24a94235826ac10
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/828997
Commit-Queue: Arman Uguray <armansito@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: James Godfrey-Kittle <jamesgk@google.com>
2 files changed