With this change, render-pass-related counters are calculated at render
pass creation time and stored alongside the render pass handle (and
serial) in the render pass cache.  On every use, the render pass'
counters are accumulated over the global counters.

Additionally, this change adds MSRTT resolve and unresolve counters to
render pass counters.

Bug: angleproject:4836
Change-Id: If15a789e5a7d66c7ea5a2315bc76fe045ce57491
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2444099
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>