Revert "content: convert SSL notifications to observer usage"

content/public/browser/notification_types.h

 // Copyright (c) 2012 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_
 
 // This file describes various types used to describe and filter notifications
 // that pass through the NotificationService.
 //
@@ skipping 84 matching lines @@
   // a Source<WebContents> corresponding to the tab in which the request was
   // issued.  Details in the form of a ResourceRequestDetails object are
   // provided.
   NOTIFICATION_RESOURCE_RESPONSE_STARTED,
 
   // A redirect was received while requesting a resource.  The source will be
   // a Source<WebContents> corresponding to the tab in which the request was
   // issued.  Details in the form of a ResourceRedirectDetails are provided.
   NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
 
+  // SSL ---------------------------------------------------------------------
+
+  // Updating the SSL security indicators (the lock icon and such) proceeds
+  // in two phases:
+  //
+  // 1) The internal SSL state for a host or tab changes.  When this happens,
+  //    the SSLManager broadcasts an SSL_INTERNAL_STATE_CHANGED notification.
+  //
+  // 2) The SSLManager for each tab receives this notification and might or
+  //    might not update the navigation entry for its tab, depending on
+  //    whether the change in state affects that tab.  If the SSLManager does
+  //    change the navigation entry, then the SSLManager broadcasts an
+  //    SSL_VISIBLE_STATE_CHANGED notification to the user interface can
+  //    redraw properly.
+
+  // The SSL state of a page has changed in some visible way.  For example,
+  // if an insecure resource is loaded on a secure page.  Note that a
+  // toplevel load commit will also update the SSL state (since the
+  // NavigationEntry is new) and this message won't always be sent in that
+  // case.  Listen to this notification if you need to refresh SSL-related UI
+  // elements.
+  //
+  // There is no source or details.
+  NOTIFICATION_SSL_VISIBLE_STATE_CHANGED,
+
+  // The SSL state of the browser has changed in some internal way.  For
+  // example, the user might have explicitly allowed some broken certificate
+  // or a secure origin might have included some insecure content.  Listen to
+  // this notifiation if you need to keep track of our internal SSL state.
+  //
+  // The source will be the browser context. The details will be the navigation
+  // controller associated with the state change.
+  NOTIFICATION_SSL_INTERNAL_STATE_CHANGED,
+
   // Devtools ------------------------------------------------------------------
 
   // Indicates that a devtools agent has attached to a client. The source is
   // the BrowserContext* and the details is the inspected RenderViewHost*.
   NOTIFICATION_DEVTOOLS_AGENT_ATTACHED,
 
   // Indicates that a devtools agent has detached from a client. The source is
   // the BrowserContext* and the details is the inspected RenderViewHost*.
   NOTIFICATION_DEVTOOLS_AGENT_DETACHED,
 
@@ skipping 187 matching lines @@
   // The source is a NavigationController.
   NOTIFICATION_REPOST_WARNING_SHOWN,
 
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_TYPES_H_