Remove unused API.

dart/sdk/lib/_internal/compiler/implementation/elements/elements.dart

 // Copyright (c) 2012, 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 elements;
 
 
 import '../tree/tree.dart';
 import '../util/util.dart';
 import '../resolution/resolution.dart';
@@ skipping 566 matching lines @@
           LabelElement labelElement = elements[label];
           if (labelElement != null && labelElement.isContinueTarget) {
             return true;
           }
         }
       }
     }
     return false;
   }
 
-  static bool switchStatementHasDefault(SwitchStatement node) {
-    for (SwitchCase switchCase in node.cases) {
-      if (switchCase.isDefaultCase) return true;
-    }
-    return false;
-  }
-
   static bool isUnusedLabel(LabeledStatement node, TreeElements elements) {
     Node body = node.statement;
     TargetElement element = elements[body];
     // Labeled statements with no element on the body have no breaks.
     // A different target statement only happens if the body is itself
     // a break or continue for a different target. In that case, this
     // label is also always unused.
     return element == null || element.statement != body;
   }
 }
@@ skipping 304 matching lines @@
   Element lookupSelector(Selector selector, Compiler compiler);
   Element lookupSuperSelector(Selector selector, Compiler compiler);
 
   Element lookupLocalMember(String memberName);
   Element lookupBackendMember(String memberName);
   Element lookupSuperMember(String memberName);
 
   Element lookupSuperMemberInLibrary(String memberName,
                                      LibraryElement library);
 
-  Element lookupSuperInterfaceMember(String memberName,
-                                     LibraryElement fromLibrary);
-
   Element validateConstructorLookupResults(Selector selector,
                                            Element result,
                                            Element noMatch(Element));
 
   Element lookupConstructor(Selector selector, [Element noMatch(Element)]);
-  Element lookupFactoryConstructor(Selector selector,
-                                   [Element noMatch(Element)]);
 
   void forEachMember(void f(ClassElement enclosingClass, Element member),
                      {bool includeBackendMembers: false,
                       bool includeSuperAndInjectedMembers: false});
 
   void forEachInstanceField(void f(ClassElement enclosingClass, Element field),
                             {bool includeSuperAndInjectedMembers: false});
 
   /// Similar to [forEachInstanceField] but visits static fields.
   void forEachStaticField(void f(ClassElement enclosingClass, Element field));
@@ skipping 57 matching lines @@
   Token get endToken;
 
   // TODO(kasperl): Try to get rid of these.
   void set annotatedElement(Element value);
   void set resolutionState(int value);
 
   MetadataAnnotation ensureResolved(Compiler compiler);
 }
 
 abstract class VoidElement extends Element {}