Reland "Vulkan: Use VK repos' internal BUILD.gn files" This is a reland of 552f5fcb0d8fcc615856ce3b678190e1cbdd38e6 Original change's description: > Vulkan: Use VK repos' internal BUILD.gn files > > This retires custom BUILD.gn files for the Vulkan Headers, Tools, > Validation-Layers, and Loader repos. They now have integrated BUILD.gn > files so switched ANGLE to use those by default. > Also Validation Layer, Loader, and Tools repos no longer uses codegen > so this speeds up the build overall. > Switched over from old VK_LAYER_LUNARG_standard_validation meta-layer > to VK_LAYER_KHRONOS_validation unified layer. > > This changes includes a temporary workaround to the Vulkan-Loader repo > to remove its Window's build dependence on WDK. There are plans to > remove that depenedence in Loader master, but until then we can use > our custom branch workaround. > It also includes a custom branch for validation layers that includes > some build fixes for ANGLE. > Finally, the layers were crashing on Android when attempting to use > DebugUtils extension so forcing DebugReport on Android for now. > > Bug: angleproject:2449 > Bug: angleproject:3320 > Bug: angleproject:3852 > Bug: chromium:997009 > Bug: chromium:997016 > Change-Id: I48b36acefcc7f2bc930eb72d6fdbc87bca24f833 > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1610438 > Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> > Reviewed-by: Jamie Madill <jmadill@chromium.org> > Commit-Queue: Tobin Ehlis <tobine@google.com> Bug: angleproject:2449, angleproject:3320, angleproject:3852 Change-Id: I9597be99000083b135e19b6ee68d4ae222158e72 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1769036 Commit-Queue: Tobin Ehlis <tobine@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>