AST: Remove default argument from ModuleDecl::getImportedModules().

Author: tshortli

include/swift/AST/Module.h

@@ -983,7 +983,7 @@ class ModuleDecl
   /// \p filter controls whether public, private, or any imports are included
   /// in this list.
   void getImportedModules(SmallVectorImpl<ImportedModule> &imports,
-                          ImportFilter filter = ImportFilterKind::Exported) const;
+                          ImportFilter filter) const;
 
   /// Looks up which external macros are defined by this file.
   void getExternalMacros(SmallVectorImpl<ExternalMacroPlugin> &macros) const;

lib/IDE/ImportDepth.cpp

@@ -64,7 +64,7 @@ ImportDepth::ImportDepth(ASTContext &context,
 
     // Add imports to the worklist.
     SmallVector<ImportedModule, 16> imports;
-    module->getImportedModules(imports);
+    module->getImportedModules(imports, ModuleDecl::ImportFilterKind::Exported);
     for (auto &import : imports) {
       uint8_t next = std::max(depth, uint8_t(depth + 1)); // unsigned wrap
 

lib/Index/Index.cpp

@@ -2091,12 +2091,8 @@ void IndexSwiftASTWalker::collectRecursiveModuleImports(
     return;
   }
 
-  ModuleDecl::ImportFilter ImportFilter;
-  ImportFilter |= ModuleDecl::ImportFilterKind::Exported;
-  ImportFilter |= ModuleDecl::ImportFilterKind::Default;
-  // FIXME: ImportFilterKind::ShadowedByCrossImportOverlay?
   SmallVector<ImportedModule, 8> Imports;
-  TopMod.getImportedModules(Imports);
+  TopMod.getImportedModules(Imports, ModuleDecl::ImportFilterKind::Exported);
 
   for (auto Import : Imports) {
     collectRecursiveModuleImports(*Import.importedModule, Visited);