Create ChangeNotice(s) and set parsed/resolved units.

pkg/analyzer/test/generated/engine_test.dart

Index: pkg/analyzer/test/generated/engine_test.dart
diff --git a/pkg/analyzer/test/generated/engine_test.dart b/pkg/analyzer/test/generated/engine_test.dart
index 78092187eb855ef1806673c5998b7b9e275cfd3f..19269a4b66bf94d4d37cd2f6dc2c3520faf488d3 100644
--- a/pkg/analyzer/test/generated/engine_test.dart
+++ b/pkg/analyzer/test/generated/engine_test.dart
@@ -5689,6 +5689,11 @@ class TestAnalysisContext implements InternalAnalysisContext {
     return 0;
   }
   @override
+  ChangeNoticeImpl getNotice(Source source) {
+    fail("Unexpected invocation of getNotice");
+    return null;
+  }
+  @override
   Namespace getPublicNamespace(LibraryElement library) {
     fail("Unexpected invocation of getPublicNamespace");
     return null;