Prune the old deploy code. This CL does a few changes:

pkg/polymer/lib/src/transform/script_compactor.dart

Index: pkg/polymer/lib/src/transform/script_compactor.dart
diff --git a/pkg/polymer/lib/src/transform/script_compactor.dart b/pkg/polymer/lib/src/transform/script_compactor.dart
index 9c2550aed4cbecb75cbb565d08f3e6457bd1d28a..b399e9e08607124f5fedc16fb5f1046661a2a659 100644
--- a/pkg/polymer/lib/src/transform/script_compactor.dart
+++ b/pkg/polymer/lib/src/transform/script_compactor.dart
@@ -28,8 +28,8 @@ import 'common.dart';
  * elements annotated with `@CustomTag`.
  */
 class ScriptCompactor extends Transformer {
-  Future<bool> isPrimary(Asset input) =>
-      new Future.value(input.id.extension == ".html");
+  /** Only run this transformer on .html files. */
+  final String allowedExtensions = ".html";
 
   Future apply(Transform transform) {
     var id = transform.primaryId;