Fix codegen and isolate issues for frog dart:html

lib/isolate/frog/natives.js

 // 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.
 
 // Top-level native code needed by the frog compiler
 
 var $globalThis = this;
 var $globals = null;
 var $globalState = null;
 var $thisScriptUrl = null;
@@ skipping 26 matching lines @@
   var self = this;
   this.wrap$1 = function(arg) {
     var res = isolateContext.eval(function() { return self(arg); });
     $globalState.topEventLoop.run();
     return res;
   };
   this.wrap$call$1 = function() { return this.wrap$1; };
   return this.wrap$1;
 };
 
+// Wrap a 2-arg dom-callback to bind it with the current isolate:
+function $wrap_call$2(fn) { return fn && fn.wrap$call$2(); }
+
+Function.prototype.wrap$call$2 = function() {
+  var isolateContext = $globalState.currentContext;
+  var self = this;
+  this.wrap$2 = function(arg1, arg2) {
+    var res = isolateContext.eval(function() { return self(arg1, arg2); });
+    $globalState.topEventLoop.run();
+    return res;
+  };
+  this.wrap$call$2 = function() { return this.wrap$2; };
+  return this.wrap$2;
+};
+
 $thisScriptUrl = (function () {
   if (!$supportsWorkers || $isWorker) return (void 0);
 
   // TODO(5334778): Find a cross-platform non-brittle way of getting the
   // currently running script.
   var scripts = document.getElementsByTagName('script');
   // The scripts variable only contains the scripts that have already been
   // executed. The last one is the currently running script.
   var script = scripts[scripts.length - 1];
   var src = script && script.src;
   if (!src) {
     // TODO()
     src = "FIXME:5407062" + "_" + Math.random().toString();
     if (script) script.src = src;
   }
   return src;
 })();