[Offline Pages] Delete associated page along with bookmark.

chrome/browser/bookmarks/bookmark_model_factory.cc

 // 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.
 
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 
 #include "base/command_line.h"
 #include "base/deferred_sequenced_task_runner.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "chrome/browser/bookmarks/chrome_bookmark_client.h"
 #include "chrome/browser/bookmarks/managed_bookmark_service_factory.h"
 #include "chrome/browser/bookmarks/startup_task_runner_service_factory.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/undo/bookmark_undo_service_factory.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/features.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/bookmark_utils.h"
 #include "components/bookmarks/browser/startup_task_runner_service.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "components/offline_pages/offline_page_bookmark_observer.h"
+#include "components/offline_pages/offline_page_model.h"
 #include "components/prefs/pref_service.h"
 #include "components/undo/bookmark_undo_service.h"
 #include "content/public/browser/browser_thread.h"
 
+#if BUILDFLAG(ANDROID_JAVA_UI)
+#include "chrome/browser/android/offline_pages/offline_page_model_factory.h"
+#endif
+
 using bookmarks::BookmarkModel;
 
 // static
 BookmarkModel* BookmarkModelFactory::GetForBrowserContext(
     content::BrowserContext* context) {
   return static_cast<BookmarkModel*>(
       GetInstance()->GetServiceForBrowserContext(context, true));
 }
 
 // static
 BookmarkModel* BookmarkModelFactory::GetForBrowserContextIfExists(
     content::BrowserContext* context) {
   return static_cast<BookmarkModel*>(
       GetInstance()->GetServiceForBrowserContext(context, false));
 }
 
 // static
 BookmarkModelFactory* BookmarkModelFactory::GetInstance() {
   return base::Singleton<BookmarkModelFactory>::get();
 }
 
 BookmarkModelFactory::BookmarkModelFactory()
     : BrowserContextKeyedServiceFactory(
         "BookmarkModel",
         BrowserContextDependencyManager::GetInstance()) {
   DependsOn(BookmarkUndoServiceFactory::GetInstance());
   DependsOn(ManagedBookmarkServiceFactory::GetInstance());
+#if BUILDFLAG(ANDROID_JAVA_UI)
+  DependsOn(offline_pages::OfflinePageModelFactory::GetInstance());
+#endif
   DependsOn(StartupTaskRunnerServiceFactory::GetInstance());
 }
 
 BookmarkModelFactory::~BookmarkModelFactory() {
 }
 
 KeyedService* BookmarkModelFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   Profile* profile = Profile::FromBrowserContext(context);
   BookmarkModel* bookmark_model =
       new BookmarkModel(base::WrapUnique(new ChromeBookmarkClient(
           profile, ManagedBookmarkServiceFactory::GetForProfile(profile))));
   bookmark_model->Load(profile->GetPrefs(), profile->GetPath(),
                        StartupTaskRunnerServiceFactory::GetForProfile(profile)
                            ->GetBookmarkTaskRunner(),
                        content::BrowserThread::GetTaskRunnerForThread(
                            content::BrowserThread::UI));
+#if BUILDFLAG(ANDROID_JAVA_UI)
+  offline_pages::OfflinePageBookmarkObserver* offline_page_listener =
+      offline_pages::OfflinePageModelFactory::GetForBrowserContext(context)

[Dmitry Titov, 2016/08/17 03:58:36]

But, doesn't it remove the benefit of having OfflinePageBookmarkObserver - that
it can be created w/o creating (and loading) of the OfflinePageModel?

+          ->GetBookmarkObserver();
+  if (offline_page_listener)
+    bookmark_model->AddObserver(offline_page_listener);
+#endif  // BUILDFLAG(ANDROID_JAVA_UI)
   bool register_bookmark_undo_service_as_observer = true;
+
 #if !BUILDFLAG(ANDROID_JAVA_UI)
   register_bookmark_undo_service_as_observer =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableBookmarkUndo);
 #endif  // !BUILDFLAG(ANDROID_JAVA_UI)
   if (register_bookmark_undo_service_as_observer)
     BookmarkUndoServiceFactory::GetForProfile(profile)->Start(bookmark_model);
 
   return bookmark_model;
 }
 
 void BookmarkModelFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   bookmarks::RegisterProfilePrefs(registry);
 }
 
 content::BrowserContext* BookmarkModelFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextRedirectedInIncognito(context);
 }
 
 bool BookmarkModelFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }