Fix crash in SSA builder for receiver-less calls. Not sure this is correct.

dart/frog/leg/lib/js_helper.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('js_helper');
 
 #import('coreimpl.dart');
 
 #source('date_helper.dart');
 
@@ skipping 534 matching lines @@
 builtin$addAll$1(receiver, collection) {
   checkNull(receiver);
   if (!isJSArray(receiver)) return UNINTERCEPTED(receiver.addAll(collection));
 
   var iterator = collection.iterator();
   while (iterator.hasNext()) {
     receiver.add(iterator.next());
   }
 }
 
-// TODO(ahe): Investigate why this method causes a compiler crash.
-XXX_builtin$addLast$1(receiver, value) {
+builtin$addLast$1(receiver, value) {
   checkNull(receiver);
   if (!isJSArray(receiver)) return UNINTERCEPTED(receiver.addLast(value));
 
-  throw @'builtin$addLast$1 is not implemented';
+  JS("Object", @"$0.push($1)", receiver, value);
 }
 
 builtin$clear$0(receiver) {
   checkNull(receiver);
   if (!isJSArray(receiver)) return UNINTERCEPTED(receiver.clear());
   receiver.length = 0;
 }
 
-// TODO(ahe): Investigate why this method causes a compiler crash.
-XXX_builtin$forEach$1(receiver, f) {
+builtin$forEach$1(receiver, f) {
   checkNull(receiver);
   if (!isJSArray(receiver)) return UNINTERCEPTED(receiver.forEach(f));
 
-  throw @'builtin$forEach$1 is not implemented';
+  var length = JS("num", @"$0.length", receiver);
+  for (var i = 0; i < length; i++) {
+    f(JS("Object", @"$0[$1]", receiver, i));
+  }
 }
 
 builtin$getRange$2(receiver, start, length) {
   checkNull(receiver);
   if (!isJSArray(receiver)) {
     return UNINTERCEPTED(receiver.getRange(start, length));
   }
   if (0 === length) return [];
   checkNull(start); // TODO(ahe): This is not specified but co19 tests it.
   checkNull(length); // TODO(ahe): This is not specified but co19 tests it.
@@ skipping 549 matching lines @@
 builtin$hashCode$0(receiver) {
   if (receiver is num) return receiver & 0x1FFFFFFF;
   if (receiver is String) {
     throw 'String.hashCode is not implemented';
   }
   if (isJSArray(receiver)) {
     throw 'List.hashCode is not implemented';
   }
   return UNINTERCEPTED(receiver.hashCode());
 }