Record only names of instance members in subtypes.

pkg/analyzer/lib/src/dart/analysis/index.dart

Index: pkg/analyzer/lib/src/dart/analysis/index.dart
diff --git a/pkg/analyzer/lib/src/dart/analysis/index.dart b/pkg/analyzer/lib/src/dart/analysis/index.dart
index 3cc7d4ec17f66f8c4ea46e6c96d03d90465a4cd9..f0a067855a8b80d1f5a2c5d187c8dbb797b3f4f3 100644
--- a/pkg/analyzer/lib/src/dart/analysis/index.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/index.dart
@@ -762,9 +762,9 @@ class _IndexContributor extends GeneralizingAstVisitor {
     }
 
     for (ClassMember member in node.members) {
-      if (member is MethodDeclaration) {
+      if (member is MethodDeclaration && !member.isStatic) {
         addMemberName(member.name);
-      } else if (member is FieldDeclaration) {
+      } else if (member is FieldDeclaration && !member.isStatic) {
         for (var field in member.fields.variables) {
           addMemberName(field.name);
         }