Vulkan: Check mInFlightCommands doesn't grow too fast The mInFlightCommand vector could grow faster than the GPU can complete tasks. Check for this edge case and give the GPU a chance to catch up with work. Also allows us to enable performance tests for Draw Calls on vulkan since it was affected by this limit check before. Bug: angleproject:2742 Change-Id: I66a86ea6b5300fa3d74b07dc341aa597824b5f09 Reviewed-on: https://chromium-review.googlesource.com/1147607 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>