ObjectiveC migrator: When adding conforming protocol,
only add outer-most conforming protocols as adding
others are redundant.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186473 91177308-0d34-0410-b5e6-96231b3b80d8
More code conformance.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186474 91177308-0d34-0410-b5e6-96231b3b80d8