Split the Kernel transformations into modular and global ones

utils/kernel-service/kernel-service.dart

Index: utils/kernel-service/kernel-service.dart
diff --git a/utils/kernel-service/kernel-service.dart b/utils/kernel-service/kernel-service.dart
index 7477b420d21233a92eca3c03cba21971821c8e41..f0d1c4d7b5c184fc9d4d8802de3e152d363d33b6 100644
--- a/utils/kernel-service/kernel-service.dart
+++ b/utils/kernel-service/kernel-service.dart
@@ -151,8 +151,9 @@ Future<CompilationResult> parseScriptImpl(DartLoaderBatch batch_loader,
     return new CompilationError(loader.errors.toList());
   }
 
-  // Link program into one file, cf. --link option in dartk.
-  target.transformProgram(program);
+  // Perform target-specific transformations.
+  target.performModularTransformations(program);
+  target.performGlobalTransformations(program);
 
   // Write the program to a list of bytes and return it.
   var sink = new DataSink();