Add draw call perf test using 5 vertex arrays. This should highlight problems with array buffer state changes even more than the single attribute test. Bug: angleproject:3014 Change-Id: I7f42ddb48f0f794fa279b81c8378dab8dc9db489 Reviewed-on: https://chromium-review.googlesource.com/c/1413788 Commit-Queue: Jamie Madill <jmadill@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>