[Offline Pages] Delete associated page along with bookmark.

components/offline_pages/external_listener.h

Index: components/offline_pages/external_listener.h
diff --git a/components/offline_pages/external_listener.h b/components/offline_pages/external_listener.h
new file mode 100644
index 0000000000000000000000000000000000000000..72fd7085dc87e0573b75128d04dbdac57e200e63
--- /dev/null
+++ b/components/offline_pages/external_listener.h
@@ -0,0 +1,30 @@
+// Copyright 2016 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 COMPONENTS_OFFLINE_PAGES_EXTERNAL_LISTENER_H_
+#define COMPONENTS_OFFLINE_PAGES_EXTERNAL_LISTENER_H_
+
+#include "components/bookmarks/browser/base_bookmark_model_observer.h"
+
+namespace bookmarks {
+class BookmarkModel;
+class BookmarkNode;
+}  // namespace base
+
+namespace offline_pages {
+
+class ExternalListener : public bookmarks::BaseBookmarkModelObserver {

[Dmitry Titov, 2016/08/12 05:43:43]

Lets name it somehow with "Bookmark" word, something like
OfflinePagesBookmarksObserver. Then the name of file/class will give some idea
what it is about. Same about "impl" one.

[romax, 2016/08/16 19:05:44]

Done.

+ public:
+  void BookmarkModelChanged() override {}
+
+  void BookmarkNodeRemoved(bookmarks::BookmarkModel* model,
+                           const bookmarks::BookmarkNode* parent,
+                           int old_index,
+                           const bookmarks::BookmarkNode* node,
+                           const std::set<GURL>& removed_urls) override {}

[Dmitry Titov, 2016/08/12 05:43:43]

I think this can be made abstract method, since it's the one ytou want to
override in Impl.

[romax, 2016/08/16 19:05:44]

Done.

+};
+
+}  // namespace offline_pages
+
+#endif  // COMPONENTS_OFFLINE_PAGES_EXTERNAL_LISTENER_H_