Vulkan: Track LOAD/STORE_OP_NONE in perf counters Bug: angleproject:5048 Change-Id: I52ed67e7a5c173dd1a7202fd6d4a1c484e79ea75 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3556367 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>