Update plugin spec to match server spec changes

pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart

Index: pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart
diff --git a/pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart b/pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart
index 6f0b2c48c34be783863867a536f84fea909b2f53..0d6e5e219b541c87673ea4a965b9bbf733cd597e 100644
--- a/pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart
+++ b/pkg/analyzer_plugin/test/integration/support/protocol_matchers.dart
@@ -579,6 +579,8 @@ final Matcher isChangeContentOverlay = new LazyMatcher(() => new MatchesJsonObje
  *   "docSummary": optional String
  *   "docComplete": optional String
  *   "declaringType": optional String
+ *   "defaultArgumentListString": optional String
+ *   "defaultArgumentListTextRanges": optional List<int>
  *   "element": optional Element
  *   "returnType": optional String
  *   "parameterNames": optional List<String>
@@ -603,6 +605,8 @@ final Matcher isCompletionSuggestion = new LazyMatcher(() => new MatchesJsonObje
     "docSummary": isString,
     "docComplete": isString,
     "declaringType": isString,
+    "defaultArgumentListString": isString,
+    "defaultArgumentListTextRanges": isListOf(isInt),
     "element": isElement,
     "returnType": isString,
     "parameterNames": isListOf(isString),