Use GL_QCOM_TILED_RENDERING to explicitly discard stencil

Bug: skia:
Change-Id: I7a6234f6a9955dbda83ab2d8fc6930fe680e102b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/245529
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
13 files changed