patch from issue 428303004

editor/util/plugins/com.google.dart.java2dart/resources/test_support_include.dart

Index: editor/util/plugins/com.google.dart.java2dart/resources/test_support_include.dart
diff --git a/editor/util/plugins/com.google.dart.java2dart/resources/test_support_include.dart b/editor/util/plugins/com.google.dart.java2dart/resources/test_support_include.dart
index 446273fa7135120d2980b25889e56caf7d7b7aa2..eb26cf9d0dbbcec49513a0d38ff7f4a263704d37 100644
--- a/editor/util/plugins/com.google.dart.java2dart/resources/test_support_include.dart
+++ b/editor/util/plugins/com.google.dart.java2dart/resources/test_support_include.dart
@@ -32,12 +32,15 @@ class TestSource implements Source {
   Source resolve(String uri) {
     throw new UnsupportedOperationException();
   }
-  Source resolveRelative(Uri uri) {
+  Uri resolveRelative(Uri uri) {
     throw new UnsupportedOperationException();
   }
   UriKind get uriKind {
     throw new UnsupportedOperationException();
   }
+  Uri get uri {
+    throw new UnsupportedOperationException();
+  }
   TimestampedData<String> get contents {
     throw new UnsupportedOperationException();
   }