Move isPrivateName and isPublicName to Name.

pkg/compiler/lib/src/dart_backend/placeholder_collector.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.
 
 part of dart_backend;
 
 class LocalPlaceholder {
   final String identifier;
   final Set<Node> nodes;
   LocalPlaceholder(this.identifier) : nodes = new Set<Node>();
@@ skipping 362 matching lines @@
     }
     elementNodes.putIfAbsent(element, () => new Set<Node>()).add(node);
   }
 
   /// Marks [node] to be renamed per-library if it names an instance member
   /// and has a private name.
   void tryMakePrivateIdentifier(Node node, Element element) {
     if (node is Identifier &&
         !Elements.isStaticOrTopLevel(element) &&
         !Elements.isLocal(element) &&
-        isPrivateName(node.source)) {
+        Name.isPrivateName(node.source)) {
       privateNodes.putIfAbsent(
           currentElement.library, () => new Set<Identifier>()).add(node);
     }
   }
 
   void makeUnresolvedPlaceholder(Node node) {
     unresolvedNodes.add(node);
   }
 
   void makeLocalPlaceholder(Identifier identifier) {
@@ skipping 323 matching lines @@
 
   visitBlock(Block node) {
     for (Node statement in node.statements.nodes) {
       if (statement is VariableDefinitions) {
         makeVarDeclarationTypePlaceholder(statement);
       }
     }
     node.visitChildren(this);
   }
 }