Roll vulkan-deps from a7b8bd76ed0c to c77b9ed3b121 (4 revisions)

https://chromium.googlesource.com/vulkan-deps.git/+log/a7b8bd76ed0c..c77b9ed3b121

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/vulkan-deps-skia-autoroll
Please CC johnstiles@google.com on the revert to ensure that a human
is aware of the problem.

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Cq-Include-Trybots: skia/skia.primary:Build-Debian10-Clang-x86_64-Debug-Dawn;skia/skia.primary:Build-Debian10-Clang-x86_64-Release-ANGLE;skia/skia.primary:Test-Win10-Clang-NUC5i7RYH-GPU-IntelIris6100-x86_64-Debug-All-ANGLE
Bug: None
Tbr: johnstiles@google.com
Change-Id: I150fa54c18e3429fbf0ed9139ef0d02d91032738
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/618742
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index bf7c5c8..718fe2e 100644
--- a/DEPS
+++ b/DEPS
@@ -55,7 +55,7 @@
   "third_party/externals/vulkanmemoryallocator"  : "https://chromium.googlesource.com/external/github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator@7de5cc00de50e71a3aab22dea52fbb7ff4efceb6",
   # vulkan-deps is a meta-repo containing several interdependent Khronos Vulkan repositories.
   # When the vulkan-deps revision is updated, those repos (spirv-*, vulkan-*) should be updated as well.
-  "third_party/externals/vulkan-deps"            : "https://chromium.googlesource.com/vulkan-deps@a7b8bd76ed0c833a79132475105eb9ef37d6beff",
+  "third_party/externals/vulkan-deps"            : "https://chromium.googlesource.com/vulkan-deps@c77b9ed3b121eab0a478257d7adc770ec379f3bb",
   "third_party/externals/spirv-cross"            : "https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Cross@a89dea3c499b1e322b39c7e6127af2777c4aa49b",
   "third_party/externals/spirv-headers"          : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git@70ff9d939cd7fd0c758756ac57ab0c7c6d6c64d6",
   "third_party/externals/spirv-tools"            : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git@43c99b5ee087704a5ae0909d0ce7be3eff416905",