Roll ANGLE from a8b962b78978 to dc2cf6fc370e (6 revisions)

https://chromium.googlesource.com/angle/angle.git/+log/a8b962b78978..dc2cf6fc370e

2021-01-06 jmadill@chromium.org Roll third_party/vulkan-deps/ b08eace32..cbab63796 (17 commits; 1 trivial rolls)
2021-01-06 jmadill@chromium.org Remove "init" from VaryingPacking.
2021-01-06 jmadill@chromium.org Organize VaryingPacking methods.
2021-01-06 jmadill@chromium.org Remove ProgramLinkedResources from ProgramExecutable.
2021-01-06 timvp@google.com Capture/Replay: Don't force built-in attribs to have a location
2021-01-06 syoussefi@chromium.org Vulkan: Remove duplicate shaderType parameter to SPIR-V transformer

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/angle-chromium-autoroll
Please CC ianelliott@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_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win-asan;luci.chromium.try:win_optional_gpu_tests_rel;luci.chromium.try:linux-swangle-try-x64;luci.chromium.try:win-swangle-try-x86
Bug: None
Tbr: ianelliott@google.com
Test: Test: Capture "World War Doh"
Change-Id: Iecaf606d44fc49b9b67d4bc06999a516a8370981
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611211Reviewed-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@{#840813}

DEPS

@@ -211,7 +211,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': 'a8b962b78978def21ccccc8db00581e810fa4354',
+  'angle_revision': 'dc2cf6fc370e1a620fadb631683fd2bf6786672f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.