Set empty namespaces for public/exportNamespace of synthetic libraries.

pkg/analyzer/test/src/summary/resynthesize_common.dart

Index: pkg/analyzer/test/src/summary/resynthesize_common.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_common.dart b/pkg/analyzer/test/src/summary/resynthesize_common.dart
index 3c9b0488ca7989ec60bad579bc6167335208fac5..aa69a705e1edde35b3cc3b8e720a9cf8dfdbbc00 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_common.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_common.dart
@@ -4677,14 +4677,12 @@ typedef F();''');
 
   test_unresolved_import() {
     allowMissingFiles = true;
-    checkLibrary("import 'foo.dart';", allowErrors: true);
-  }
-
-  test_unresolved_import_deferred() {

[Paul Berry, 2016/12/08 12:58:22]

Why are we getting rid of this test?

[scheglov, 2016/12/08 15:53:09]

I realized that this test does not add anything new.
I should have updated the previous test with the "loadLibraryFunction" test,
which presence does not depend on whether the library is deferred or not.
So, I fixed the glitch.

-    allowMissingFiles = true;
     LibraryElementImpl library =
-        checkLibrary("import 'missing.dart' deferred as p;");
-    expect(library.imports[0].importedLibrary.loadLibraryFunction, isNotNull);
+        checkLibrary("import 'foo.dart';", allowErrors: true);
+    LibraryElement importedLibrary = library.imports[0].importedLibrary;
+    expect(importedLibrary.loadLibraryFunction, isNotNull);
+    expect(importedLibrary.publicNamespace, isNotNull);
+    expect(importedLibrary.exportNamespace, isNotNull);
   }
 
   test_unresolved_part() {