Remove insertRange.

runtime/lib/typeddata.dart

Index: runtime/lib/typeddata.dart
diff --git a/runtime/lib/typeddata.dart b/runtime/lib/typeddata.dart
index b7acbd2a992bcab525578d1eb548c873942a370b..6b55a6c6ee6cce4c0c1259eb671090f6efdcd779 100644
--- a/runtime/lib/typeddata.dart
+++ b/runtime/lib/typeddata.dart
@@ -537,16 +537,11 @@ abstract class _TypedListBase {
     throw new StateError("More than one element");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int end) {
     throw new UnsupportedError(
         "Cannot remove from a non-extendable array");
   }
 
-  void insertRange(int start, int length, [initialValue]) {
-    throw new UnsupportedError(
-        "Cannot add to a non-extendable array");
-  }
-
   List toList() {
     return new List.from(this);
   }