Add setAll, insertAll, replaceRange and fillRange.

samples/swarm/swarm_ui_lib/observable/observable.dart

Index: samples/swarm/swarm_ui_lib/observable/observable.dart
diff --git a/samples/swarm/swarm_ui_lib/observable/observable.dart b/samples/swarm/swarm_ui_lib/observable/observable.dart
index d6789885634a39dbf415469974fb6868141f0e14..7c66b3a1901e63663cf855de49ef927d24c4c280 100644
--- a/samples/swarm/swarm_ui_lib/observable/observable.dart
+++ b/samples/swarm/swarm_ui_lib/observable/observable.dart
@@ -196,6 +196,14 @@ class ObservableList<T>
     recordListInsert(index, element);
   }
 
+  void insertAll(int index, Iterable<T> iterable) {
+    throw new UnimplementedError();
+  }
+
+  void setAll(int index, Iterable<T> iterable) {
+    throw new UnimplementedError();
+  }
+
   T removeLast() {
     final result = _internal.removeLast();
     recordListRemove(length, result);
@@ -261,6 +269,14 @@ class ObservableList<T>
     throw new UnimplementedError();
   }
 
+  void replaceRange(int start, int end, Iterable<T> iterable) {
+    throw new UnimplementedError();
+  }
+
+  void fillRange(int start, int end, [T fillValue]) {
+    throw new UnimplementedError();
+  }
+
   List sublist(int start, [int end]) {
     throw new UnimplementedError();
   }