Make BGRA_8888 renderable & textureable by default in the mock context

This is a temporary change to allow us to switch GrMockOptions to be based on GrColorType. Chrome sets up their FakeWebGraphicsContext3DProvider in this manner.

TBR=bsalomon@google.com
Change-Id: I68c6b78aeb0395e1783c7acf1dbdbd028373433c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225720
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed