Roll third_party/vulkan-loader/src b932cf53f769..c731adec183b (4 commits)
Roll third_party/vulkan-loader/src b932cf53f769..c731adec183b (4 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/Vulkan-Loader.git/+log/b932cf53f769..c731adec183b

git log b932cf53f769..c731adec183b --date=short --first-parent --format='%ad %ae %s'
2020-02-06 94770d7fe1cce6ea0791fa9927c1107de4d2e37b@google.com loader: Avoid clang warning about parentheses
2020-02-05 charles@lunarg.com loader: secure_getenv change logging WARN to INFO
2020-02-05 charles@lunarg.com loader: don't unconditionally add std-val meta layer
2020-02-05 lenny@lunarg.com loader: Fix buffer size updates in registry search

Created with:
  gclient setdep -r third_party/vulkan-loader/src@c731adec183b

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/vulkan-loader-angle-autoroll
Please CC 94770d7fe1cce6ea0791fa9927c1107de4d2e37b@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

Bug: None
Tbr: 94770d7fe1cce6ea0791fa9927c1107de4d2e37b@google.com
Change-Id: I9fda2c484d8cf0a170fefd6f75dcf52282664ac1
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2042235
Reviewed-by: angle-autoroll <09ea9b8bac6cceb6ec3b72e615745c3a1e982ce2@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <09ea9b8bac6cceb6ec3b72e615745c3a1e982ce2@skia-public.iam.gserviceaccount.com>

ppy/angle,ppy/angle,ppy/angle,ppy/angle