Rename LowerTypeTestsSummaryAction to PassSummaryAction. NFCI.

I intend to use the same type with the same semantics in the WholeProgramDevirt
pass.

Differential Revision: https://reviews.llvm.org/D29746

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294629 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed