Use Jamie's 7-layer burrito of Vulkan DEPS.

This allows us to roll all Vulkan- and SPIRV-related dependencies
simultaneously (which are often inter-dependent).

This change also implicitly rolls the dependencies to the revs in ANGLE.

Change-Id: I50a1e5b2ef706ffbfbc22f5783321820bb50ae96
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/36500
Commit-Queue: Stephen White <senorblanco@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
diff --git a/build_overrides/vulkan_validation_layers.gni b/build_overrides/vulkan_validation_layers.gni
index 491afbc..37193a8 100644
--- a/build_overrides/vulkan_validation_layers.gni
+++ b/build_overrides/vulkan_validation_layers.gni
@@ -15,9 +15,9 @@
 # These are variables that are overridable by projects that include Dawn.
 # The values in this file are the defaults for when we are building from
 # Dawn's repository.
-vulkan_headers_dir = "//third_party/vulkan-headers"
-vvl_spirv_tools_dir = "//third_party/SPIRV-Tools"
-vvl_glslang_dir = "//third_party/glslang"
+vulkan_headers_dir = "//third_party/vulkan-deps/vulkan-headers/src"
+vvl_spirv_tools_dir = "//third_party/vulkan-deps/spirv-tools/src"
+vvl_glslang_dir = "//third_party/vulkan-deps/glslang/src"
 
 # Subdirectories for generated files
 vulkan_data_subdir = "vulkandata"