Vulkan: Suppress modified device count warning This is a loader warning added in the following commit: https://github.com/KhronosGroup/Vulkan-Loader/commit/8daad81803f5ed9b36a172c299140dde7a8c4494 It fires on our corp laptops that contain multiple GPUs (one high-performance, one integrated). Most likely caused by Nvidia's Optimus Vulkan layer. It doesn't quite match the patterns of validation layers, but is straightforward to skip by searching for the beginning of the message. Bug: angleproject:6514 Change-Id: Ia93896364cae9e879faf068a100064f2edd04af2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3204141 Commit-Queue: Cody Northrop <cnorthrop@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>