Issue 3251. Fixes for node type

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

Index: compiler/java/com/google/dart/compiler/ast/DartNode.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartNode.java b/compiler/java/com/google/dart/compiler/ast/DartNode.java
index 77931caaa159644dfafc15fe0f52237aec53ba69..1259d36e59d77ffeefd7862fa8105cb317edb0f1 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartNode.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartNode.java
@@ -7,7 +7,6 @@ package com.google.dart.compiler.ast;
 import com.google.dart.compiler.common.AbstractNode;
 import com.google.dart.compiler.resolver.Element;
 import com.google.dart.compiler.type.Type;
-import com.google.dart.compiler.type.Types;
 import com.google.dart.compiler.util.DefaultTextOutput;
 
 import java.util.List;
@@ -16,10 +15,8 @@ import java.util.List;
  * Base class for all Dart AST nodes.
  */
 public abstract class DartNode extends AbstractNode {
-  private static final Type dynamicType = Types.newDynamicType();
-
   private DartNode parent;
-  private Type type = dynamicType;
+  private Type type;
 
   public final String toSource() {
     DefaultTextOutput out = new DefaultTextOutput(false);