Make setVisibility private and change users to mergeVisibility. This is
currently a nop as those users are the first merge or are a merge
of a hidden explicit visibility, which always wins in the current
implementation.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155095 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed