Roll Skia from 1a49a5334c36 to 7a1f241c0134 (4 revisions)

https://skia.googlesource.com/skia.git/+log/1a49a5334c36..7a1f241c0134

2020-09-22 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from 688a0b34 to 1d6daec3 (400 revisions)
2020-09-22 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ANGLE from 48588bd1810d to f39e0f01aa1f (25 revisions)
2020-09-22 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from fe878dedd5ad to 6aadd31a5f98 (1 revision)
2020-09-22 skia-autoroll@skia-public.iam.gserviceaccount.com Roll dawn from dcd37fa4f476 to 52a588f3c9ba (1 revision)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-autoroll
Please CC csmartdalton@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-blink-rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Cq-Do-Not-Cancel-Tryjobs: true
Bug: chromium:1032721
Tbr: csmartdalton@google.com
Test: Test: Test: DrawCallPerfBenchmark.Run/vulkan_attrib_changeTest: Test: tested with trigger.py
Change-Id: Iddfbfa046dd9c86cbc1e3ee1a488b85f6c5baf6c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2423256Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#809230}

DEPS

@@ -195,7 +195,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '1a49a5334c36ff4100f673bd8d3b2c68a58fa319',
+  'skia_revision': '7a1f241c0134effb3064ac78dad75573f8c3086c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.