Rearranges the polymer package now that the old compiler is gone.

pkg/polymer/test/build/polyfill_injector_test.dart

Index: pkg/polymer/test/build/polyfill_injector_test.dart
diff --git a/pkg/polymer/test/transform/polyfill_injector_test.dart b/pkg/polymer/test/build/polyfill_injector_test.dart
similarity index 91%
rename from pkg/polymer/test/transform/polyfill_injector_test.dart
rename to pkg/polymer/test/build/polyfill_injector_test.dart
index 8bb92edc7cc2ec6de863746aaac5bd0f1d68afd2..124b21b14702b8063f06d88e0119c4113c210af3 100644
--- a/pkg/polymer/test/transform/polyfill_injector_test.dart
+++ b/pkg/polymer/test/build/polyfill_injector_test.dart
@@ -2,10 +2,10 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library polymer.test.transform.polyfill_injector_test;
+library polymer.test.build.polyfill_injector_test;
 
-import 'package:polymer/src/transform/common.dart';
-import 'package:polymer/src/transform/polyfill_injector.dart';
+import 'package:polymer/src/build/common.dart';
+import 'package:polymer/src/build/polyfill_injector.dart';
 import 'package:unittest/compact_vm_config.dart';
 
 import 'common.dart';