Yesterday, I simplified how we stream top-level decls.

Yesterday, I simplified how we stream top-level decls.

After a discussion with Ted, we both came to the conclusion that adding a "HandleTopLevelDeclaration" hook to ASConsumer is far more elegant. The default implementation of HandleTopLevelDeclaration will be responsible for iterating over the ScopedDecl (which has a chain of the decls:-).

TODO: Once Ted adds HandleTopLevelDeclaration, make sure TagDecls are chainged appropriately...

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@44445 91177308-0d34-0410-b5e6-96231b3b80d8