New analyzer snapshot.

editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart

Index: editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
diff --git a/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart b/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
index a1a74ad85831e6f476280e146119d0ef498bc4e1..8b69fd6a6f93da10f1e4046ba11d24c4f35f89b5 100644
--- a/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
+++ b/editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart
@@ -315,6 +315,10 @@ class IllegalStateException extends JavaException {
   IllegalStateException([message = ""]) : super(message);
 }
 
+class NotImplementedException extends JavaException {
+  NotImplementedException(message) : super(message);
+}
+
 class UnsupportedOperationException extends JavaException {
   UnsupportedOperationException([message = ""]) : super(message);
 }
@@ -417,6 +421,10 @@ bool javaCollectionContainsAll(Iterable list, Iterable c) {
   return c.fold(true, (bool prev, e) => prev && list.contains(e));
 }
 
+bool javaSetEquals(Set a, Set b) {
+  return a.containsAll(b) && b.containsAll(a);
+}
+
 javaMapPut(Map target, key, value) {
   var oldValue = target[key];
   target[key] = value;