Merge pull request #33118 from varungandhi-apple/vg-builder-pattern-ExtInfo

Refactor ExtInfo to use the builder pattern for construction.

Author: varungandhi-apple

include/swift/AST/ASTContext.h

@@ -590,13 +590,9 @@ class ASTContext final {
   ///
   /// \param params The function parameters.
   /// \param resultTy The Swift result type.
-  /// \param incompleteExtInfo Used to convey escaping and throwing
-  ///                          information, in case it is needed.
   /// \param trueRep The actual calling convention, which must be C-compatible.
-  ///                The calling convention in \p incompleteExtInfo is ignored.
   const clang::Type *
   getClangFunctionType(ArrayRef<AnyFunctionType::Param> params, Type resultTy,
-                       const FunctionType::ExtInfo incompleteExtInfo,
                        FunctionTypeRepresentation trueRep);
 
   /// Get the Swift declaration that a Clang declaration was exported from,