Revert "Move dart2jslib parts into separate libraries."

tests/compiler/dart2js/unparser2_test.dart

Index: tests/compiler/dart2js/unparser2_test.dart
diff --git a/tests/compiler/dart2js/unparser2_test.dart b/tests/compiler/dart2js/unparser2_test.dart
index ca14149ad2ede626193cb1147a45a8a0b7ebe918..88940b61e5b6b255f9843eae2879ad035104958d 100644
--- a/tests/compiler/dart2js/unparser2_test.dart
+++ b/tests/compiler/dart2js/unparser2_test.dart
@@ -6,14 +6,17 @@ import "package:expect/expect.dart";
 import "package:compiler/src/scanner/scannerlib.dart";
 import "package:compiler/src/tree/tree.dart";
 
-import "package:compiler/src/diagnostic_listener.dart";
+import "package:compiler/src/dart2jslib.dart"
+    show DiagnosticListener,
+         Script;
+
 import "package:compiler/src/elements/elements.dart"
     show CompilationUnitElement,
          LibraryElement;
+
 import "package:compiler/src/elements/modelx.dart"
     show CompilationUnitElementX,
          LibraryElementX;
-import "package:compiler/src/script.dart";
 
 main() {
   testClassDef();