Issue 23332. Don't compute overrides for static members.

pkg/analysis_server/lib/src/computer/computer_overrides.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library computer.overrides;
 
 import 'package:analysis_server/src/collections.dart';
 import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart' as engine;
@@ skipping 11 matching lines @@
 
   /**
    * Returns the computed occurrences, not `null`.
    */
   List<Override> compute() {
     for (CompilationUnitMember unitMember in _unit.declarations) {
       if (unitMember is ClassDeclaration) {
         _currentClass = unitMember.element;
         for (ClassMember classMember in unitMember.members) {
           if (classMember is MethodDeclaration) {
+            if (classMember.isStatic) {
+              continue;
+            }
             SimpleIdentifier nameNode = classMember.name;
             _addOverride(nameNode.offset, nameNode.length, nameNode.name);
           }
           if (classMember is FieldDeclaration) {
+            if (classMember.isStatic) {
+              continue;
+            }
             List<VariableDeclaration> fields = classMember.fields.variables;
             for (VariableDeclaration field in fields) {
               SimpleIdentifier nameNode = field.name;
               _addOverride(nameNode.offset, nameNode.length, nameNode.name);
             }
           }
         }
       }
     }
     return _overrides;
@@ skipping 68 matching lines @@
     }
     // setter
     member = classElement.lookUpSetter(name + '=', library);
     if (member != null) {
       return member;
     }
     // not found
     return null;
   }
 }