[perf] Change pivot button text based on selections.
[perf] Change pivot button text based on selections.

Change button text to 'Display Table' when summary operations are selected.

Change-Id: I1ec2585d5f13f57583a1e9498fa9c208d69f09f3
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/490219
Commit-Queue: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>
Auto-Submit: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>
Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot