Fix multi zoom
Fix multi zoom

Bug: skia:9022
Change-Id: Ia74b6afe010eb2ef0d9e9e347f251c8177ebc314
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/211068
Reviewed-by: Kevin Lubick <7cdab2cfab351f23814786ba39716e90eed69047@google.com>
Commit-Queue: Nathaniel Nifong <1ce561679465ea4956c6210637580cd7ba456816@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot