Minor type inference fixes to do with null and bottom types.

pkg/analyzer/test/src/task/strong/front_end_inference_test.dart

Index: pkg/analyzer/test/src/task/strong/front_end_inference_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/front_end_inference_test.dart b/pkg/analyzer/test/src/task/strong/front_end_inference_test.dart
index 994733059af9e8c0ee36fc8965cc55107d14d8a1..92d8561b578db55fbdbb027ac947573db9a1c5bf 100644
--- a/pkg/analyzer/test/src/task/strong/front_end_inference_test.dart
+++ b/pkg/analyzer/test/src/task/strong/front_end_inference_test.dart
@@ -205,6 +205,8 @@ class _InstrumentationValueForType extends fasta.InstrumentationValue {
       ClassElement element = type.element;
       _appendElementName(buffer, element);
       _appendTypeArguments(buffer, type.typeArguments);
+    } else if (type.isBottom) {
+      buffer.write('<BottomType>');
     } else {
       buffer.write(type.toString());
     }