suggest import uris when import is only text in file

pkg/analysis_server/lib/src/services/completion/keyword_contributor.dart

Index: pkg/analysis_server/lib/src/services/completion/keyword_contributor.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/keyword_contributor.dart b/pkg/analysis_server/lib/src/services/completion/keyword_contributor.dart
index 6cbfb014ee2f966fffed9d4c5bc626ccc2bb925a..55e9c0d11fc295565164fdb8c97c6b34a3fead49 100644
--- a/pkg/analysis_server/lib/src/services/completion/keyword_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/keyword_contributor.dart
@@ -203,7 +203,12 @@ class _KeywordVisitor extends GeneralizingAstVisitor {
         _addSuggestion(Keyword.DEFERRED, DART_RELEVANCE_HIGH);
       }
     }
-    if (entity == node.semicolon || node.combinators.contains(entity)) {
+    // Handle degenerate case where import statement does not have a semicolon
+    // and the cursor is in the uri string
+    if ((entity == node.semicolon &&
+            node.uri != null &&
+            node.uri.offset + 1 != request.offset) ||
+        node.combinators.contains(entity)) {
       _addImportDirectiveKeywords(node);
     }
   }