[C++] Expand benchmark coverage for arrow from parquet reading

[asfimport]

Reporter: Micah Kornfield / @emkornfield
Assignee: Micah Kornfield / @emkornfield

PRs and other links:

• GitHub Pull Request #7175

_{Note: This issue was originally created as ARROW-8794. Please see the migration documentation for further details.}

[asfimport]

Antoine Pitrou / @pitrou:
Issue resolved by pull request 7175
#7175