Graceful handling of extension process crashes

chrome/common/notification_type.h

 // Copyright (c) 2006-2008 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 CHROME_COMMON_NOTIFICATION_TYPE_H_
 #define CHROME_COMMON_NOTIFICATION_TYPE_H_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
@@ skipping 569 matching lines @@
     EXTENSION_UNLOADED,
 
     // Sent after a new ExtensionHost is created. The details are
     // an ExtensionHost*.
     EXTENSION_HOST_CREATED,
 
     // Sent before an ExtensionHost is destroyed. The details are
     // an ExtensionHost*.
     EXTENSION_HOST_DESTROYED,
 
+    // Sent when extension render process crashes. The details are
+    // an ExtensionHost*.
+    EXTENSION_PROCESS_CRASHED,
+
+    // Sent after an extension render process is restarted after a crash
+    // and is fully functional. The details are an ExtensionHost*.
+    EXTENSION_PROCESS_RESTORED,
+
     // Debugging ---------------------------------------------------------------
 
     // Sent from ~RenderViewHost. The source is the RenderViewHost.
     RENDER_VIEW_HOST_DELETED,
 
     // Count (must be last) ----------------------------------------------------
     // Used to determine the number of notification types.  Not valid as
     // a type parameter when registering for or posting notifications.
     NOTIFICATION_TYPE_COUNT
   };
@@ skipping 11 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  // CHROME_COMMON_NOTIFICATION_TYPE_H_