Update generated analyzer_experimental for new List interface.

pkg/analyzer_experimental/lib/src/generated/java_core.dart

 library java.core;
 
 import "dart:math" as math;
 import "dart:uri";
 
 class JavaSystem {
   static int currentTimeMillis() {
     return (new DateTime.now()).millisecondsSinceEpoch;
   }
 
@@ skipping 273 matching lines @@
   }
 
   void sort([int compare(E a, E b)]) {
     elements.sort(compare);
   }
 
   int indexOf(E element, [int start = 0]) {
     return elements.indexOf(element, start);
   }
 
+  void insert(int index, E element) {
+    elements.insert(index, element);
+  }
+
   int lastIndexOf(E element, [int start]) {
     return elements.lastIndexOf(element, start);
   }
 
   void clear() {
     elements.clear();
   }
 
   void remove(Object element) {
     return elements.remove(element);
@@ skipping 120 matching lines @@
       }
     } else if (sb.length > newLength) {
       var s = sb.toString().substring(0, newLength);
       sb = new StringBuffer(s);
     }
   }
   void clear() {
     sb = new StringBuffer();
   }
 }