Fix for translation of \!= to \!identical(), but use == and \!= for Enum.

pkg/analyzer/lib/src/generated/instrumentation.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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.instrumentation;
 
 import 'java_core.dart';
@@ skipping 266 matching lines @@
   InstrumentationBuilder record(Exception exception);
 }
 
 /**
  * The instrumentation recording level representing (1) recording [EVERYTHING] recording of
  * all instrumentation data, (2) recording only [METRICS] information, or (3) recording
  * turned [OFF] in which case nothing is recorded.
  */
 class InstrumentationLevel extends Enum<InstrumentationLevel> {
   /** Recording all instrumented information */
-  static final InstrumentationLevel EVERYTHING = new InstrumentationLevel('EVERYTHING', 0);
+  static const InstrumentationLevel EVERYTHING = const InstrumentationLevel('EVERYTHING', 0);
 
   /** Recording only metrics */
-  static final InstrumentationLevel METRICS = new InstrumentationLevel('METRICS', 1);
+  static const InstrumentationLevel METRICS = const InstrumentationLevel('METRICS', 1);
 
   /** Nothing recorded */
-  static final InstrumentationLevel OFF = new InstrumentationLevel('OFF', 2);
+  static const InstrumentationLevel OFF = const InstrumentationLevel('OFF', 2);
 
-  static final List<InstrumentationLevel> values = [EVERYTHING, METRICS, OFF];
+  static const List<InstrumentationLevel> values = const [EVERYTHING, METRICS, OFF];
 
   static InstrumentationLevel fromString(String str) {
     if (str == "EVERYTHING") {
       return InstrumentationLevel.EVERYTHING;
     }
     if (str == "METRICS") {
       return InstrumentationLevel.METRICS;
     }
     if (str == "OFF") {
       return InstrumentationLevel.OFF;
     }
     throw new IllegalArgumentException("Unrecognised InstrumentationLevel");
   }
 
-  InstrumentationLevel(String name, int ordinal) : super(name, ordinal);
+  const InstrumentationLevel(String name, int ordinal) : super(name, ordinal);
 }
 
 /**
  * The interface `InstrumentationLogger` defines the behavior of objects that are used to log
  * instrumentation data.
  *
  * For an example of using objects that implement this interface, see [Instrumentation].
  */
 abstract class InstrumentationLogger {
   /**
    * Create a builder that can collect the data associated with an operation identified by the given
    * name.
    *
    * @param name the name used to uniquely identify the operation
    * @return the builder that was created
    */
   InstrumentationBuilder createBuilder(String name);
 }