When running on a Pixel 2 XL PIXEL2 expecations were not being
applied. Both devices use the same chipset and have same capabilities
so treat them the same for expectations.

Bug: angleproject:4025
Change-Id: I5287e80c21b681765af540ed6dfbd053aa838c1c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1866076
Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>