Remove Infobars notifications from GoogleURLTrackerMapEntry

chrome/browser/google/google_url_tracker_map_entry.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 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.
 
 #include "chrome/browser/google/google_url_tracker_map_entry.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/google/google_url_tracker.h"
 #include "components/infobars/core/infobar.h"
-#include "content/public/browser/notification_details.h"
-#include "content/public/browser/notification_source.h"
 
 GoogleURLTrackerMapEntry::GoogleURLTrackerMapEntry(
     GoogleURLTracker* google_url_tracker,
     infobars::InfoBarManager* infobar_manager,
     scoped_ptr<GoogleURLTrackerNavigationHelper> navigation_helper)
     : google_url_tracker_(google_url_tracker),
       infobar_manager_(infobar_manager),
       infobar_delegate_(NULL),
-      navigation_helper_(navigation_helper.Pass()) {
+      navigation_helper_(navigation_helper.Pass()),
+      observing_(false) {
+  DCHECK(infobar_manager_);
 }
 
 GoogleURLTrackerMapEntry::~GoogleURLTrackerMapEntry() {
-}
-
-void GoogleURLTrackerMapEntry::Observe(
-    int type,
-    const content::NotificationSource& source,
-    const content::NotificationDetails& details) {
-  DCHECK(infobar_delegate_);
-  DCHECK_EQ(chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED, type);
-  DCHECK_EQ(infobar_manager_,
-            content::Source<infobars::InfoBarManager>(source).ptr());
-  if (content::Details<infobars::InfoBar::RemovedDetails>(
-          details)->first->delegate() == infobar_delegate_) {
-    google_url_tracker_->DeleteMapEntryForManager(infobar_manager_);
-    // WARNING: At this point |this| has been deleted!
-  }
+  if (observing_)
+    infobar_manager_->RemoveObserver(this);
 }
 
 void GoogleURLTrackerMapEntry::SetInfoBarDelegate(
     GoogleURLTrackerInfoBarDelegate* infobar_delegate) {
   DCHECK(!infobar_delegate_);
 
   // Transfer ownership of |navigation_helper_| to the infobar delegate as the
   // infobar delegate has need of it after this object has been destroyed in
   // the case where the user accepts the new Google URL.
   infobar_delegate->set_navigation_helper(navigation_helper_.Pass());
   infobar_delegate_ = infobar_delegate;
-  registrar_.Add(this,
-                 chrome::NOTIFICATION_TAB_CONTENTS_INFOBAR_REMOVED,
-                 content::Source<infobars::InfoBarManager>(infobar_manager_));
+  infobar_manager_->AddObserver(this);
+  observing_ = true;
 }
 
 void GoogleURLTrackerMapEntry::Close(bool redo_search) {
   if (infobar_delegate_) {
     infobar_delegate_->Close(redo_search);
   } else {
     // WARNING: |infobar_manager_| may point to a deleted object.  Do not
     // dereference it!  See GoogleURLTracker::OnTabClosed().
     google_url_tracker_->DeleteMapEntryForManager(infobar_manager_);
   }
   // WARNING: At this point |this| has been deleted!
 }
+
+void GoogleURLTrackerMapEntry::OnInfoBarRemoved(infobars::InfoBar* infobar,
+                                                bool animate) {
+  DCHECK(infobar_delegate_);
+  if (infobar->delegate() == infobar_delegate_) {
+    google_url_tracker_->DeleteMapEntryForManager(infobar_manager_);
+    // WARNING: At this point |this| has been deleted!
+  }
+}
+
+void GoogleURLTrackerMapEntry::OnManagerShuttingDown(
+    infobars::InfoBarManager* manager) {
+  DCHECK(observing_);
+  DCHECK_EQ(infobar_manager_, manager);
+  manager->RemoveObserver(this);
+  observing_ = false;
+}