Revert 111252 - Switch MHTMLGenerationManager to use a Callback.

content/public/browser/notification_types.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_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_
 #pragma once
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
@@ skipping 390 matching lines @@
   // This message indicates that an instance of a particular child was
   // created in a page.  (If one page contains several regions rendered by
   // the same child, this notification will occur once for each region
   // during the page load.)
   //
   // There is no usable source, since it is sent from an ephemeral task;
   // register for AllSources() to receive this notification.  The details are
   // in a Details<ChildProcessInfo>.
   NOTIFICATION_CHILD_INSTANCE_CREATED,
 
+  // Download Notifications --------------------------------------------------
+
+  // Sent when a page generation to MHTML has finished.
+  // The source is the corresponding RenderViewHost. The details is a
+  // MHTMLGenerationManager::NotificationDetails.
+  NOTIFICATION_MHTML_GENERATED,
+
   // Saved Pages -------------------------------------------------------------
 
   // Sent when a SavePackage finishes successfully. The source is the
   // SavePackage, and Details are a GURL containing address of downloaded
   // page.
   NOTIFICATION_SAVE_PACKAGE_SUCCESSFULLY_FINISHED,
 
   // Purge Memory ------------------------------------------------------------
 
   // Sent on the IO thread when the system should try to reduce the amount of
   // memory in use, no source or details are passed. See memory_purger.h .cc.
   NOTIFICATION_PURGE_MEMORY,
 
   // Sent before the repost form warning is brought up.
   // The source is a NavigationController.
   NOTIFICATION_REPOST_WARNING_SHOWN,
 
   // Sent when the zoom level changes. The source is the HostZoomMap.  The
   // details is a string of the hostname for which the zoom changed.  In case
   // of a temporary zoom level change, the details is an empty string.
   NOTIFICATION_ZOOM_LEVEL_CHANGED,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_