Update fasta tests to use the new transformation API

pkg/front_end/lib/src/fasta/compile_platform.dart

Index: pkg/front_end/lib/src/fasta/compile_platform.dart
diff --git a/pkg/front_end/lib/src/fasta/compile_platform.dart b/pkg/front_end/lib/src/fasta/compile_platform.dart
index d6085010a141feac74cbb6a7c9de1a1da7049ff3..09880e39ee4dda961f570adab180727ea2c85ec9 100644
--- a/pkg/front_end/lib/src/fasta/compile_platform.dart
+++ b/pkg/front_end/lib/src/fasta/compile_platform.dart
@@ -102,7 +102,8 @@ main(List<String> arguments) async {
       program.libraries.where(
           (Library l) => l.importUri.scheme == "dart").toList(),
       program.uriToSource);
-  target.transformProgram(program);
+  target.performModularTransformations(program);
+  target.performGlobalTransformations(program);
   for (LibraryElement analyzerLibrary in loader.libraryElements) {
     Library library = loader.getLibraryReference(analyzerLibrary);
     StringBuffer sb = new StringBuffer();