Roll ANGLE from 6d905c76310e to fc28c1db5f01 (20 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/6d905c76310e..fc28c1db5f01

2021-04-08 cnorthrop@google.com Tests: Add Disney Tsum Tsum trace
2021-04-07 b.schade@samsung.com Vulkan: Update layer provoking vertex for geometry shaders
2021-04-07 cnorthrop@google.com Capture/Replay: Ignore deletes of buffer 0
2021-04-07 jmadill@chromium.org Vulkan: Refactor to descriptor offset array.
2021-04-07 lubosz.sarnecki@collabora.com restricted_traces: Remove sha1 remains.
2021-04-07 chrisforbes@google.com Expand CL plumbing support to cover all versions
2021-04-07 jmadill@chromium.org Perf Tests: Trigger test failure on API errors.
2021-04-07 cnorthrop@google.com Scripts: Update bootstrap.py to python3
2021-04-07 jmadill@chromium.org Handle trace prerequisites.
2021-04-07 cnorthrop@google.com Capture/Replay: Fix upload script
2021-04-07 pkotwicz@chromium.org Improve Angle Android gtest support
2021-04-07 jmadill@chromium.org perf_test_runner: Enable all trace tests.
2021-04-07 jmadill@chromium.org restricted trace tests: Fix script.
2021-04-07 timvp@google.com Add Mesa Vendor ID
2021-04-07 m.maiya@samsung.com Refactor roll_aosp.sh
2021-04-07 lubosz.sarnecki@collabora.com capture: Implement capturing GLES1 vertex pointers.
2021-04-07 lubosz.sarnecki@collabora.com EGLWindow: Append noError context attribs only if enabled.
2021-04-07 jplate@google.com Fixed OpenCL headers for Windows
2021-04-07 angle-autoroll@skia-public.iam.gserviceaccount.com Roll vulkan-deps from fac6f6b00985 to 575b36060ded (3 revisions)
2021-04-07 angle-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from 9bacc030553c to 743bf032b75b (182 revisions)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/angle-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: skia/skia.primary:Build-Debian10-Clang-x86_64-Release-ANGLE;skia/skia.primary:Test-Win10-Clang-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-All-ANGLE;skia/skia.primary:Test-Win10-Clang-Golo-GPU-QuadroP400-x86_64-Debug-All-ANGLE;skia/skia.primary:Test-Win10-Clang-NUC5i7RYH-GPU-IntelIris6100-x86_64-Debug-All-ANGLE;skia/skia.primary:Test-Win10-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-All-ANGLE;skia/skia.primary:Test-Win10-Clang-NUC8i5BEK-GPU-IntelIris655-x86_64-Debug-All-ANGLE;skia/skia.primary:Test-Win10-Clang-NUCD34010WYKH-GPU-IntelHD4400-x86_64-Debug-All-ANGLE
Tbr: csmartdalton@google.com
Test: Test: MEC for Disney Tsum TsumTest: Test: angle_perftests --gtest_filter="*disney_tsum_tsum*"
Change-Id: Ib275a2aebd6e7998b8ef62c6487b1ad1914c7706
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/393639
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index fa1f775..f2cf33b 100644
--- a/DEPS
+++ b/DEPS
@@ -7,7 +7,7 @@
 deps = {
   "buildtools"                            : "https://chromium.googlesource.com/chromium/buildtools.git@505de88083136eefd056e5ee4ca0f01fe9b33de8",
   "common"                                : "https://skia.googlesource.com/common.git@9737551d7a52c3db3262db5856e6bcd62c462b92",
-  "third_party/externals/angle2"          : "https://chromium.googlesource.com/angle/angle.git@6d905c76310e95fbaca7e4666d6e3181c6686422",
+  "third_party/externals/angle2"          : "https://chromium.googlesource.com/angle/angle.git@fc28c1db5f019d15abdcec6d9278254898d12d77",
   "third_party/externals/brotli"          : "https://skia.googlesource.com/external/github.com/google/brotli.git@e61745a6b7add50d380cfd7d3883dd6c62fc2c71",
   "third_party/externals/d3d12allocator"  : "https://skia.googlesource.com/external/github.com/GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator.git@169895d529dfce00390a20e69c2f516066fe7a3b",
   # Dawn requires jinja2 and markupsafe for the code generator, and tint for SPIRV compilation.