Add copyright header to generated analyzer files.

editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java

Index: editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
diff --git a/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java b/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
index f3dfc3945ac9a026b69337723476dbd7e200d6c2..784902ca79bc8afe4e86e16c5bb2aabe8ea08e6f 100644
--- a/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
+++ b/editor/util/plugins/com.google.dart.java2dart/src/com/google/dart/java2dart/engine/MainEngine.java
@@ -141,7 +141,11 @@ public class MainEngine {
 
   private static CompilationUnit dartUnit;
 
-  private static final String HEADER = "// This code was auto-generated, is not intended to be edited, and is subject to\n"
+  private static final String HEADER = "// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file\n"
+      + "// for details. All rights reserved. Use of this source code is governed by a\n"
+      + "// BSD-style license that can be found in the LICENSE file.\n"
+      + "\n"
+      + "// This code was auto-generated, is not intended to be edited, and is subject to\n"
       + "// significant change. Please see the README file for more information.\n\n";
 
   public static void main(String[] args) throws Exception {