Enable Pivot Table by default
Enable Pivot Table by default

Pivot Table has been enabled by default in canary and autopush for a
month, and no UI-breaking bugs have been found.

Change-Id: Iba021b0359cdc3490024146c4904d271ca5288a4
google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto