Vulkan: Workaround NVIDIA not sharing with OpenGL window. NVIDIA seems to have the limitation of not being able to work with a window handle on both OpenGL and Vulkan. Apparently this also happens with NVIDIA on Linux, but doesn't happen with any other vendor. Work around this by opening a new OS window when switching between Vulkan and non-Vulkan. BUG=angleproject:1810 Change-Id: Id6bfcc2229be5a0d97202dfc87944001b4ab7871 Reviewed-on: https://chromium-review.googlesource.com/430887 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>