Report HintCode.UNDEFINED_IDENTIFIER and HintCode.UNDEFINED_MEMBER for unresolved names in comments.

pkg/analyzer/lib/src/generated/element_resolver.dart

Index: pkg/analyzer/lib/src/generated/element_resolver.dart
diff --git a/pkg/analyzer/lib/src/generated/element_resolver.dart b/pkg/analyzer/lib/src/generated/element_resolver.dart
index 06d0c56f3c979dec23e7620b6ac7a52a89b1e8a6..19f68d2e8c0ae3e5a0c8684304522f4add3d4ef0 100644
--- a/pkg/analyzer/lib/src/generated/element_resolver.dart
+++ b/pkg/analyzer/lib/src/generated/element_resolver.dart
@@ -217,6 +217,9 @@ class ElementResolver extends SimpleAstVisitor<Object> {
   @override
   Object visitCommentReference(CommentReference node) {
     Identifier identifier = node.identifier;
+    if (identifier.isSynthetic) {
+      return null;
+    }
     if (identifier is SimpleIdentifier) {
       SimpleIdentifier simpleIdentifier = identifier;
       Element element = _resolveSimpleIdentifier(simpleIdentifier);
@@ -232,11 +235,8 @@ class ElementResolver extends SimpleAstVisitor<Object> {
         }
       }
       if (element == null) {
-        // TODO(brianwilkerson) Report this error?
-        //        resolver.reportError(
-        //            StaticWarningCode.UNDEFINED_IDENTIFIER,
-        //            simpleIdentifier,
-        //            simpleIdentifier.getName());
+        _resolver.reportErrorForNode(HintCode.UNDEFINED_IDENTIFIER,
+            simpleIdentifier, [simpleIdentifier.name]);
       } else {
         if (element.library == null || element.library != _definingLibrary) {
           // TODO(brianwilkerson) Report this error?
@@ -261,7 +261,8 @@ class ElementResolver extends SimpleAstVisitor<Object> {
       SimpleIdentifier name = prefixedIdentifier.identifier;
       Element element = _resolveSimpleIdentifier(prefix);
       if (element == null) {
-//        resolver.reportError(StaticWarningCode.UNDEFINED_IDENTIFIER, prefix, prefix.getName());
+        _resolver.reportErrorForNode(
+            HintCode.UNDEFINED_IDENTIFIER, prefix, [prefix.name]);
       } else {
         prefix.staticElement = element;
         if (element is PrefixElement) {
@@ -290,7 +291,8 @@ class ElementResolver extends SimpleAstVisitor<Object> {
               }
             }
             if (memberElement == null) {
-//              reportGetterOrSetterNotFound(prefixedIdentifier, name, element.getDisplayName());
+              _resolver.reportErrorForNode(
+                  HintCode.UNDEFINED_MEMBER, name, [name.name, prefix.name]);
             } else {
               name.staticElement = memberElement;
             }