add ASTContext symbol-graph arg in unit tests

unittests/FrontendTool/ModuleLoadingTests.cpp

@@ -17,6 +17,7 @@
 #include "swift/Frontend/ModuleInterfaceLoader.h"
 #include "swift/Frontend/PrintingDiagnosticConsumer.h"
 #include "swift/Serialization/Validation.h"
+#include "swift/SymbolGraphGen/SymbolGraphOptions.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Support/VirtualFileSystem.h"
 
@@ -100,10 +101,11 @@ protected:
     langOpts.Target = llvm::Triple(llvm::sys::getDefaultTargetTriple());
     SearchPathOptions searchPathOpts;
     ClangImporterOptions clangImpOpts;
+    symbolgraphgen::SymbolGraphOptions symbolGraphOpts;
     SILOptions silOpts;
     auto ctx =
         ASTContext::get(langOpts, typeckOpts, searchPathOpts, clangImpOpts,
-                        sourceMgr, diags);
+                        symbolGraphOpts, sourceMgr, diags);
 
     ctx->addModuleInterfaceChecker(
       std::make_unique<ModuleInterfaceCheckerImpl>(*ctx, cacheDir,