Revert revision 26149.

pkg/browser/lib/dart.js

 // Copyright (c) 2013, 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.
 
 // Bootstrap support for Dart scripts on the page as this script.
 if (navigator.webkitStartDart) {
   if (!navigator.webkitStartDart()) {
     document.body.innerHTML = 'This build has expired.  Please download a new Dartium at http://www.dartlang.org/dartium/index.html';
   }
 } else {
   // TODO:
   // - Support in-browser compilation.
   // - Handle inline Dart scripts.
-
-  // Fall back to compiled JS. Run through all the scripts and
-  // replace them if they have a type that indicate that they source
-  // in Dart code.
-  //
-  //   <script type="application/dart" src="..."></script>
-  //
-  var scripts = document.getElementsByTagName("script");
-  var length = scripts.length;
-  for (var i = 0; i < length; ++i) {
-    if (scripts[i].type == "application/dart") {
-      // Remap foo.dart to foo.dart.js.
-      if (scripts[i].src && scripts[i].src != '') {
-        var script = document.createElement('script');
-        script.src = scripts[i].src.replace(/\.dart(?=\?|$)/, '.dart.js');
-        var parent = scripts[i].parentNode;
-        // TODO(vsm): Find a solution for issue 8455 that works with more
-        // than one script.
-        document.currentScript = script;
-        parent.replaceChild(script, scripts[i]);
+  window.addEventListener("DOMContentLoaded", function (e) {
+    // Fall back to compiled JS. Run through all the scripts and
+    // replace them if they have a type that indicate that they source
+    // in Dart code.
+    //
+    //   <script type="application/dart" src="..."></script>
+    //
+    var scripts = document.getElementsByTagName("script");
+    var length = scripts.length;
+    for (var i = 0; i < length; ++i) {
+      if (scripts[i].type == "application/dart") {
+        // Remap foo.dart to foo.dart.js.
+        if (scripts[i].src && scripts[i].src != '') {
+          var script = document.createElement('script');
+          script.src = scripts[i].src.replace(/\.dart(?=\?|$)/, '.dart.js');
+          var parent = scripts[i].parentNode;
+          // TODO(vsm): Find a solution for issue 8455 that works with more
+          // than one script.
+          document.currentScript = script;
+          parent.replaceChild(script, scripts[i]);
+        }
       }
     }
-  }
+  }, false);
 }