Roll vulkan-validation-layers/src/ f6e770455..aa076dae8 (2 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/Vulkan-ValidationLayers/+log/f6e7704558c6..aa076dae88e2

$ git log f6e770455..aa076dae8 --date=short --no-merges --format='%ad %ae %s'
2020-12-22 jmadill layers: Add missing 'override' keyword
2020-12-21 jzulauf syncval: Update usage docs to reflect syncval v1.0

Created with:
  roll-dep vulkan-validation-layers/src

Bug: angleproject:5390
Bug: chromium:1153258
Change-Id: I2890d4d81d6fde83a421e658730ce28a7e902a66
Reviewed-on: https://chromium-review.googlesource.com/c/vulkan-deps/+/2601339
Reviewed-by: Jamie Madill <[email protected]>
diff --git a/DEPS b/DEPS
index 517cd04..4186583 100644
--- a/DEPS
+++ b/DEPS
@@ -30,7 +30,7 @@
   'vulkan_tools_revision': '7554321b88aed733a8b2cfc618f42b43b52e6f11',
 
   # Current revision of Khronos Vulkan-ValidationLayers.
-  'vulkan_validation_revision': 'f6e7704558c6b03e0bd5b5239165479704105c89',
+  'vulkan_validation_revision': 'aa076dae88e282d7b6cada4f900b2fa7dac8ed08',
 }
 
 deps = {