Fixes crash if instant is enabled and you block JS.

content/common/notification_type.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_COMMON_NOTIFICATION_TYPE_H_
 #define CONTENT_COMMON_NOTIFICATION_TYPE_H_
 #pragma once
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
@@ skipping 1275 matching lines @@
     // Details<bool> contain the closeable flag while source is AllSources.
     // This is only sent from ChromeOS's TabCloseableStateWatcher.
     TAB_CLOSEABLE_STATE_CHANGED,
 
     // Sent each time the InstantController is updated.
     INSTANT_CONTROLLER_UPDATED,
 
     // Sent each time the InstantController shows the InstantLoader.
     INSTANT_CONTROLLER_SHOWN,
 
+    // Sent when the instant loader determines whether the page supports the
+    // instant API or not. The details is a boolean indicating if the page
+    // supports instant. The source is not used.
+    INSTANT_SUPPORT_DETERMINED,
+
     // Password Store ----------------------------------------------------------
     // This notification is sent whenenever login entries stored in the password
     // store are changed. The detail of this notification is a list of changes
     // represented by a vector of PasswordStoreChange. Each change includes a
     // change type (ADD, UPDATE, or REMOVE) as well as the
     // |webkit_glue::PasswordForm|s that were affected.
     LOGINS_CHANGED,
 
     // Sent when the applications in the NTP app launcher have been reordered.
     EXTENSION_LAUNCHER_REORDERED,
@@ skipping 18 matching lines @@
 };
 
 inline bool operator==(NotificationType::Type a, NotificationType b) {
   return a == b.value;
 }
 inline bool operator!=(NotificationType::Type a, NotificationType b) {
   return a != b.value;
 }
 
 #endif  // CONTENT_COMMON_NOTIFICATION_TYPE_H_