Status page indicator for contexts w/o .packages.

pkg/analysis_server/lib/src/status/get_handler.dart

Index: pkg/analysis_server/lib/src/status/get_handler.dart
diff --git a/pkg/analysis_server/lib/src/status/get_handler.dart b/pkg/analysis_server/lib/src/status/get_handler.dart
index fb42b23a603d6edb139ca1aa03aec7a135a90392..8aa840ae31da018d0b3f6cead4a975beb7c42d31 100644
--- a/pkg/analysis_server/lib/src/status/get_handler.dart
+++ b/pkg/analysis_server/lib/src/status/get_handler.dart
@@ -1300,6 +1300,9 @@ class GetHandler {
         String key = folder.shortName;
         buffer.write(makeLink(CONTEXT_PATH, {CONTEXT_QUERY_PARAM: folder.path},
             key, _hasException(folderMap[folder])));
+        if (!folder.getChild('.packages').exists) {
+          buffer.write(' <b>[No .packages file]</b>');
+        }
       });
       // TODO(brianwilkerson) Add items for the SDK contexts (currently only one).
       buffer.write('</p>');