Removes unused 'normalized' field in many AST nodes.

compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java

 // Copyright (c) 2011, 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.
 
 package com.google.dart.compiler.ast;
 
 import com.google.dart.compiler.parser.Token;
 import com.google.dart.compiler.resolver.Element;
 
 /**
  * Represents a Dart unary expression.
  */
 public class DartUnaryExpression extends DartExpression implements ElementReference {
 
   private final Token operator;
   private DartExpression arg;
   private final boolean isPrefix;
-  private DartExpression normalizedNode = this;
   private Element referencedElement;
 
   public DartUnaryExpression(Token operator, DartExpression arg, boolean isPrefix) {
     assert operator.isUnaryOperator() || operator == Token.SUB;
 
     this.isPrefix = isPrefix;
     this.operator = operator;
     this.arg = becomeParentOf(arg);
   }
 
   public DartExpression getArg() {
     return arg;
   }
 
   public Token getOperator() {
     return operator;
   }
 
   public boolean isPrefix() {
     return isPrefix;
   }
 
-  public void setNormalizedNode(DartExpression normalizedNode) {
-    normalizedNode.setSourceInfo(this);
-    this.normalizedNode = normalizedNode;
-  }
-
-  @Override
-  public DartExpression getNormalizedNode() {
-    return normalizedNode;
-  }
-
   @Override
   public void traverse(DartVisitor v, DartContext ctx) {
     if (v.visit(this, ctx)) {
       if (operator.isCountOperator()) {
         arg = becomeParentOf(v.acceptLvalue(getArg()));
       } else {
         arg = becomeParentOf(v.accept(getArg()));
       }
     }
     v.endVisit(this, ctx);
@@ skipping 12 matching lines @@
   @Override
   public Element getReferencedElement() {
     return referencedElement;
   }
 
   @Override
   public void setReferencedElement(Element referencedElement) {
     this.referencedElement = referencedElement;
   }
 }