Switch ProcessASTInputFile to still use ParseAST.
 - Currently this requires us to fake an input file.

 - This allows Sema to be keep all the logic for how to pull decls out of the external AST source and how to handle things like tentative definitions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82432 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed