[ClangImporter] NFC: Transform applyTypeAttributes into getConcurrencyAttrs

It has to be reachable to declaration converter to handle attributes
associated with generic parameters.

Author: xedin

lib/ClangImporter/ImportType.cpp

@@ -1633,7 +1633,7 @@ static ImportedType adjustTypeForConcreteImport(
   return {importedType, isIUO};
 }
 
-static void applyTypeAttributes(ASTContext &SwiftContext,
+void swift::getConcurrencyAttrs(ASTContext &SwiftContext,
                                 ImportTypeKind importKind,
                                 ImportTypeAttrs &attrs, clang::QualType type) {
   bool isMainActor = false;
@@ -1728,7 +1728,7 @@ ImportedType ClangImporter::Implementation::importType(
     optionality = translateNullability(*nullability, stripNonResultOptionality);
   }
 
-  applyTypeAttributes(SwiftContext, importKind, attrs, type);
+  getConcurrencyAttrs(SwiftContext, importKind, attrs, type);
 
   // If this is a completion handler parameter, record the function type whose
   // parameters will act as the results of the completion handler.

lib/ClangImporter/ImporterImpl.h

@@ -229,6 +229,15 @@ using ImportTypeAttrs = OptionSet<ImportTypeAttr>;
 ///        attributes will be imported.
 ImportTypeAttrs getImportTypeAttrs(const clang::Decl *D, bool isParam = false);
 
+/// Extract concurrency related attributes from a type.
+///
+/// \param SwiftContext The context.
+/// \param importKind The kind of import being performed.
+/// \param attrs The list to add the new attributes to.
+/// \param type The type to extract attributes from.
+void getConcurrencyAttrs(ASTContext &SwiftContext, ImportTypeKind importKind,
+                         ImportTypeAttrs &attrs, clang::QualType type);
+
 struct ImportDiagnostic {
   ImportDiagnosticTarget target;
   Diagnostic diag;