[index] The references to explicit class properties should be recorded

rdar://32376363

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@303751 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit fa589cc9302c4982e13cccde57f10d22706906c1)
2 files changed