Suppress check on localStorage to enable chrome apps

client/dart.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.
 
 // 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 {
@@ skipping 143 matching lines @@
     for (var i = 0; i < length; i++) {
       result[i] = deserializeHelper(values[i]);
     }
     return result;
   }
 
   window.registerPort = function(name, port) {
     var stringified = JSON.stringify(serialize(port));
     var attrName = 'dart-port:' + name;
     document.documentElement.setAttribute(attrName, stringified);
-    // TODO(vsm): Phase out usage of localStorage.  We're leaving it in
-    // temporarily for backwards compatibility.
-    window.localStorage[attrName] = stringified;
+    // TODO(vsm): Phase out usage of localStorage and delete the
+    // below.  We're leaving it in temporarily for backwards
+    // compatibility.
+    try {
+      window.localStorage[attrName] = stringified;
+    } catch (e) {
+      // Swallow errors (e.g., Chrome apps disallow this access).
+    }
   };
 
   window.lookupPort = function(name) {
     var attrName = 'dart-port:' + name;
     var stringified = document.documentElement.getAttribute(attrName);
     // TODO(vsm): Phase out usage of localStorage.  We're leaving it in
     // temporarily for backwards compatibility.
     if (!stringified) {
       stringified = window.localStorage[attrName];
     }
@@ skipping 71 matching lines @@
     var result = null;
     var listener = function (e) {
       result = JSON.parse(getPortSyncEventData(e));
     };
     window.addEventListener(source, listener, false);
     dispatchEvent(target, [source, serialized]);
     window.removeEventListener(source, listener, false);
     return deserialize(result);
   }
 })();