vk: don't re-check the primitive type for each batch of a mesh

Bug: skia:
Change-Id: I00561d0a2d6296924ef0d8ee25fc7215832338d8
Reviewed-on: https://skia-review.googlesource.com/15832
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
1 file changed