tree 13f49fc2d1ae0db05dd8f9d1339c92b8c67ad115
parent b1a455a1379c1aeb241df24a7f08db3ec5d6acc0
author Dave Borowitz <dborowitz@google.com> 1542746202 -0800
committer Dave Borowitz <dborowitz@google.com> 1542752513 -0800

Replace most test usages of TempFileUtil with TemporaryFolder

This is a common idiom from JUnit; no need to use our reinvented wheel
in these cases.

Change-Id: I85c75e50b77d87ca12996663448825790a2ee8f8