Vulkan:Adding key perf trace markers Adding trace markers in performance-critical functions. Primary areas of interest are command buffer processing and cleanup and memory mapping. Bug: b/156403378 Change-Id: Icba53024771711d79f7eee7085bf4dae0e033e63 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2002689 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Tobin Ehlis <tobine@google.com> Commit-Queue: Tobin Ehlis <tobine@google.com>