Roll ANGLE from 198dc345383e to 50c82f42e33f (10 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/198dc345383e..50c82f42e33f

2021-01-14 geofflang@google.com Don't index into SystemInfo gpus if it's empty.
2021-01-14 timvp@google.com Tests: Add Magic Tile 3 trace
2021-01-14 syoussefi@chromium.org Vulkan: Move xfb buffer decl to translator in emulation path
2021-01-14 timvp@google.com Capture/Replay: Only get source for linked programs
2021-01-14 jmadill@chromium.org Revert "Vulkan: Prefer host cached memory for Buffers"
2021-01-14 natsu@google.com Update roll AOSP scripts to reflect vulkan-deps subdirectory
2021-01-14 timvp@google.com Fix call to getImageFormatFeatureBits() in SurfaceVk.cpp
2021-01-14 angle-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 3549479dc4cc to 5255c465bbba (6 revisions)
2021-01-14 angle-autoroll@skia-public.iam.gserviceaccount.com Roll vulkan-deps from 50bcbaad4cbf to 5869a809d551 (4 revisions)
2021-01-14 angle-autoroll@skia-public.iam.gserviceaccount.com Roll Chromium from 451c64aaec04 to fabc0b0b129a (518 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 ethannicholas@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: ethannicholas@google.com
Test: Test: angle_perftests --gtest_filter=TracePerfTest.Run/*magic_tiles_3*Test: Test: scripts/roll_aosp.sh && m ANGLE
Change-Id: Iabeb174f583296c7f99a2d4d546b41a8aee4f047
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/354358
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 4821ddf..1a64185 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@198dc345383e1f17252945bdb4a6dd47f4345ad4",
+  "third_party/externals/angle2"          : "https://chromium.googlesource.com/angle/angle.git@50c82f42e33fe7b58b7fd8ad343d0c7c8245eedb",
   "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 shaderc and tint for SPIRV compilation.