Add drawArraysBaseVertexIsBroken flag

A non-zero base vertex in glDrawArrays appears to not always work on
Adreno.

Bug: skia:6650
Change-Id: I301eaba8c7790ed814a2ab8d8c53dd2b9e0d77d1
Reviewed-on: https://skia-review.googlesource.com/17083
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
3 files changed