Roll third_party/externals/angle2 a8e6a46..b40d48a (10 commits)

https://chromium.googlesource.com/angle/angle.git/+log/a8e6a463121b..b40d48a67c93

git log a8e6a46..b40d48a --date=short --first-parent --format='%ad %ae %s'
2020-02-10 jmadill@chromium.org Vulkan: Remove ensure init from updateActiveImages.
2020-02-10 jmadill@chromium.org Vulkan: Fix EGLBlobCacheTest.
2020-02-10 jmadill@chromium.org Vulkan: Command graph linearization (Step 4).
2020-02-10 jmadill@chromium.org Speed up InstancingTest.LineLoop.
2020-02-10 jmadill@chromium.org Vulkan: Defer RenderPass image barriers.
2020-02-10 jmadill@chromium.org Suppress two failing NVIDIA D3D11 tests.
2020-02-10 cnorthrop@google.com Capture/Replay: Avoid null pointer dereference in MEC
2020-02-10 cnorthrop@google.com Capture/Replay: Initial support for framebuffer textures
2020-02-10 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/SwiftShader dd48b7e2d06e..b3b2a4fc756f (11 commits)
2020-02-10 angle-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/glslang/src 95c414ffee64..ae59435606fc (1 commits)

Created with:
  gclient setdep -r third_party/externals/angle2@b40d48a67c93

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 stani@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: stani@google.com
Change-Id: I0a9ed97fc4d6268b507bc8a1150f4326c4194880
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269986
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@a8e6a463121b9920564fb6efd7f2c857d7023fe3",
+  "third_party/externals/angle2"          : "https://chromium.googlesource.com/angle/angle.git@b40d48a67c932625f349c6e58036c2d96b62489b",
   "third_party/externals/dawn"            : "https://dawn.googlesource.com/dawn.git@604072bc2ed01018eb03bcbbf9d94042f679af63",
   "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",