Roll third_party/externals/angle2 f60da87..d6053da (8 commits)

https://chromium.googlesource.com/angle/angle.git/+log/f60da87424a4..d6053daa6203

git log f60da87..d6053da --date=short --first-parent --format='%ad %ae %s'
2019-12-10 jdarpinian@chromium.org Remove tabs from source files.
2019-12-10 hckim.kim@samsung.com Vulkan: Implement Transform Feedback support via extension
2019-12-10 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/glslang/src d519167d2ecb..6c479796f6e4 (3 commits)
2019-12-10 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/vulkan-validation-layers/src f34b9fb086b3..a749c31b749b (3 commits)
2019-12-10 ianelliott@google.com Vulkan: Update bugs for multisample texture failures
2019-12-10 syoussefi@chromium.org Vulkan: EXT_gpu_shader5 support: fma
2019-12-10 davidben@chromium.org Fix potential indexing into an empty vector in ANGLE tests
2019-12-10 b.schade@samsung.com Vulkan: Add options to select more device types

Created with:
  gclient setdep -r third_party/externals/angle2@d6053daa6203

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 djsollen@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/+/master/autoroll/README.md

Cq-Include-Trybots: skia/skia.primary:Build-Debian9-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
Bug: None
Tbr: djsollen@google.com
Change-Id: I97ed557a4b62d78e5242a26ae67656f17863b1be
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259238
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>

Author: skia-autoroll

DEPS

@@ -7,7 +7,7 @@ vars = {
 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@f60da87424a4747142d3f7187a55c1e19869a663",
+  "third_party/externals/angle2"          : "https://chromium.googlesource.com/angle/angle.git@d6053daa6203bd9ab467711662652368f5f28cc8",
   "third_party/externals/dawn"            : "https://dawn.googlesource.com/dawn.git@3c086a0c2e1dc3e2e14aaa3d78c052c7e07274b4",
   "third_party/externals/dng_sdk"         : "https://android.googlesource.com/platform/external/dng_sdk.git@c8d0c9b1d16bfda56f15165d39e0ffa360a11123",
   "third_party/externals/egl-registry"    : "https://skia.googlesource.com/external/github.com/KhronosGroup/EGL-Registry@a0bca08de07c7d7651047bedc0b653cfaaa4f2ae",