Recommit changing List.skip/take/revert returns Iterable and remove mappedBy.

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

 library java.core;
 
 import "dart:math" as math;
 import "dart:io";
 import "dart:uri";
 
 class System {
   static final String pathSeparator = Platform.pathSeparator;
   static final int pathSeparatorChar = Platform.pathSeparator.codeUnitAt(0);
 
@@ skipping 285 matching lines @@
   }
 
   E removeAt(int index) {
     return elements.removeAt(index);
   }
 
   E removeLast() {
     return elements.removeLast();
   }
 
-  List<E> get reversed => elements.reversed;
+  Iterable<E> get reversed => elements.reversed;
 
   List<E> getRange(int start, int length) {
     return elements.getRange(start, length);
   }
 
   void setRange(int start, int length, List<E> from, [int startFrom]) {
     elements.setRange(start, length, from, startFrom);
   }
 
   void removeRange(int start, int length) {
@@ skipping 81 matching lines @@
 }
 
 File getAbsoluteFile(File file) {
   var path = file.fullPathSync();
   return new File(path);
 }
 
 Uri newUriFromFile(File file) {
   return new Uri.fromComponents(path: file.fullPathSync());
 }