Add workaround for Mac stencil buffer leak

Add workaround for Mac stencil buffer leak

This change adds a new workaround, "avoid_stencil_buffers", which is
enabled on certain Macs with leaky drivers. This workaround currently
only forwards to Skia, enabling a mode where stencil buffers are
avoided.

BUG=713854
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2866353002
Cr-Original-Commit-Position: refs/heads/master@{#470712}
Review-Url: https://codereview.chromium.org/2891563002 .
Cr-Commit-Position: refs/branch-heads/3071@{#589}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/84f3edbaa712fc88efa0ae9a26a3953abb99b752

[ericrk, 2017-05-16 21:51:22]

Description was changed from

==========
Add workaround for Mac stencil buffer leak

This change adds a new workaround, "avoid_stencil_buffers", which is
enabled on certain Macs with leaky drivers. This workaround currently
only forwards to Skia, enabling a mode where stencil buffers are
avoided.

BUG=713854
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2866353002
Cr-Commit-Position: refs/heads/master@{#470712}
(cherry picked from commit 4f3b335015f66c266bc1ed11f7b22761907df6f4)
==========

to

==========
Add workaround for Mac stencil buffer leak

This change adds a new workaround, "avoid_stencil_buffers", which is
enabled on certain Macs with leaky drivers. This workaround currently
only forwards to Skia, enabling a mode where stencil buffers are
avoided.

BUG=713854
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2866353002
Cr-Original-Commit-Position: refs/heads/master@{#470712}
Review-Url: https://codereview.chromium.org/2891563002 .
Cr-Commit-Position: refs/branch-heads/3071@{#589}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/84f3edbaa712fc88efa0ae9a26a3...
==========

[ericrk, 2017-05-16 21:51:23]

Committed patchset #1 (id:1) manually as
84f3edbaa712fc88efa0ae9a26a3953abb99b752.