Add a sugared version of ASTOwningResult::take,
that does a downcast. It is named takeAs<T>().
The plain-pointer version is also added, but
that side seems to be seriously bitrotten.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67258 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed