[Offline Pages] Delete associated page along with bookmark.

chrome/browser/android/offline_pages/offline_page_bookmark_observer.cc

+// 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.
+
+#include "chrome/browser/android/offline_pages/offline_page_bookmark_observer.h"
+
+#include "chrome/browser/profiles/profile.h"
+#include "components/bookmarks/browser/bookmark_node.h"
+#include "components/offline_pages/client_namespace_constants.h"
+#include "components/offline_pages/offline_page_model.h"
+#include "url/gurl.h"
+
+namespace offline_pages {
+
+OfflinePageBookmarkObserver::OfflinePageBookmarkObserver(
+    content::BrowserContext* context)
+    : context_(context),
+      offline_page_model_(nullptr),
+      weak_ptr_factory_(this) {}
+
+OfflinePageBookmarkObserver::~OfflinePageBookmarkObserver() {}
+
+void OfflinePageBookmarkObserver::BookmarkModelChanged() {}
+
+void OfflinePageBookmarkObserver::BookmarkNodeRemoved(
+    bookmarks::BookmarkModel* model,
+    const bookmarks::BookmarkNode* parent,
+    int old_index,
+    const bookmarks::BookmarkNode* node,
+    const std::set<GURL>& removed_urls) {
+  if (!offline_page_model_) {
+    offline_page_model_ =
+        OfflinePageModelFactory::GetForBrowserContext(context_);
+  }
+  ClientId client_id = ClientId(kBookmarkNamespace, std::to_string(node->id()));
+  offline_page_model_->GetOfflineIdsForClientId(
+      client_id,
+      base::Bind(&OfflinePageBookmarkObserver::DoExpireRemovedBookmarkPages,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
+void OfflinePageBookmarkObserver::DoExpireRemovedBookmarkPages(
+    const MultipleOfflineIdResult& offline_ids) {
+  offline_page_model_->ExpirePages(
+      offline_ids, base::Time::Now(),
+      base::Bind(&OfflinePageBookmarkObserver::OnExpireRemovedBookmarkPagesDone,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
+void OfflinePageBookmarkObserver::OnExpireRemovedBookmarkPagesDone(
+    bool result) {}
+
+}  // namespace offline_pages