Add Store+Sync to reading list.

ios/chrome/browser/reading_list/reading_list_model_factory.cc

Index: ios/chrome/browser/reading_list/reading_list_model_factory.cc
diff --git a/ios/chrome/browser/reading_list/reading_list_model_factory.cc b/ios/chrome/browser/reading_list/reading_list_model_factory.cc
index 5b892cf3ae6647c46bda42394556496facefa054..d132c9109d23391777bcd1e38f3ff35cf340156c 100644
--- a/ios/chrome/browser/reading_list/reading_list_model_factory.cc
+++ b/ios/chrome/browser/reading_list/reading_list_model_factory.cc
@@ -8,14 +8,24 @@
 
 #include "base/memory/singleton.h"
 #include "components/keyed_service/ios/browser_state_dependency_manager.h"
+#include "components/leveldb_proto/proto_database.h"
+#include "components/leveldb_proto/proto_database_impl.h"
+#include "components/pref_registry/pref_registry_syncable.h"
 #include "ios/chrome/browser/browser_state/browser_state_otr_helper.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
+#include "ios/chrome/browser/experimental_flags.h"
+#include "ios/chrome/browser/reading_list/proto/reading_list.pb.h"
 #include "ios/chrome/browser/reading_list/reading_list_model_impl.h"
-#include "ios/chrome/browser/reading_list/reading_list_model_storage_defaults.h"
+#include "ios/chrome/browser/reading_list/reading_list_pref_names.h"
+#include "ios/chrome/browser/reading_list/reading_list_store.h"
+#include "ios/web/public/web_thread.h"
 
 // static
 ReadingListModel* ReadingListModelFactory::GetForBrowserState(
     ios::ChromeBrowserState* browser_state) {
+  if (!experimental_flags::IsReadingListEnabled()) {
+    return nullptr;
+  }
   return static_cast<ReadingListModelImpl*>(
       GetInstance()->GetServiceForBrowserState(browser_state, true));
 }
@@ -23,6 +33,9 @@ ReadingListModel* ReadingListModelFactory::GetForBrowserState(
 // static
 ReadingListModel* ReadingListModelFactory::GetForBrowserStateIfExists(
     ios::ChromeBrowserState* browser_state) {
+  if (!experimental_flags::IsReadingListEnabled()) {
+    return nullptr;
+  }
   return static_cast<ReadingListModelImpl*>(
       GetInstance()->GetServiceForBrowserState(browser_state, false));
 }
@@ -39,12 +52,35 @@ ReadingListModelFactory::ReadingListModelFactory()
 
 ReadingListModelFactory::~ReadingListModelFactory() {}
 
+void ReadingListModelFactory::RegisterProfilePrefs(
+    user_prefs::PrefRegistrySyncable* registry) {
+  // Register a not syncable pref.
+  registry->RegisterBooleanPref(
+      reading_list::prefs::kReadingListHasUnseenEntries, false, 0);
+}
+
 std::unique_ptr<KeyedService> ReadingListModelFactory::BuildServiceInstanceFor(
     web::BrowserState* context) const {
-  std::unique_ptr<ReadingListModelStorage> storage(
-      new ReadingListModelStorageDefaults());
+  scoped_refptr<base::SequencedTaskRunner> background_task_runner =
+      web::WebThread::GetBlockingPool()->GetSequencedTaskRunner(
+          web::WebThread::GetBlockingPool()->GetSequenceToken());
+  base::FilePath database_dir(
+      context->GetStatePath().Append(FILE_PATH_LITERAL("readinglist")));
+
+  std::unique_ptr<ReadingListDB> db = base::MakeUnique<
+      leveldb_proto::ProtoDatabaseImpl<reading_list::ReadingListLocal>>(
+      background_task_runner);
+
+  std::unique_ptr<ReadingListStore> store = base::MakeUnique<ReadingListStore>(
+      std::move(db), database_dir,
+      base::Bind(&syncer::ModelTypeStore::CreateStore, syncer::READING_LIST,
+                 database_dir.AsUTF8Unsafe(), background_task_runner));
+
+  ios::ChromeBrowserState* chrome_browser_state =
+      ios::ChromeBrowserState::FromBrowserState(context);
   std::unique_ptr<ReadingListModelImpl> reading_list_model(
-      new ReadingListModelImpl(std::move(storage)));
+      new ReadingListModelImpl(std::move(store),
+                               chrome_browser_state->GetPrefs()));
   return std::move(reading_list_model);
 }