[Useless] Hooking up storage manager in page model.

components/offline_pages/offline_page_model.cc

Index: components/offline_pages/offline_page_model.cc
diff --git a/components/offline_pages/offline_page_model.cc b/components/offline_pages/offline_page_model.cc
index b4e916fe123cc1e6faefca9786fa95e4ad78bef2..92d8c628cf791c41fb46dfcbc9034973d5681768 100644
--- a/components/offline_pages/offline_page_model.cc
+++ b/components/offline_pages/offline_page_model.cc
@@ -26,6 +26,8 @@
 #include "url/gurl.h"
 
 using ArchiverResult = offline_pages::OfflinePageArchiver::ArchiverResult;
+using ClearPagesCallback =
+    offline_pages::OfflinePageStorageManager::ClearPagesCallback;
 
 namespace offline_pages {
 
@@ -508,6 +510,10 @@ void OfflinePageModel::CheckForExternalFileDeletion() {
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
+void OfflinePageModel::ExpirePages(const ClearPagesCallback& callback) {
+  storage_manager_->ClearPagesIfNeeded(callback);
+}
+
 ClientPolicyController* OfflinePageModel::GetPolicyController() {
   return policy_controller_.get();
 }
@@ -628,6 +634,13 @@ void OfflinePageModel::OnLoadDone(
     delayed_task.Run();
   delayed_tasks_.clear();
 
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+      FROM_HERE,
+      base::Bind(&OfflinePageModel::ExpirePages, weak_ptr_factory_.GetWeakPtr(),
+                 base::Bind(&OfflinePageModel::OnExpiredPagesCleared,
+                            weak_ptr_factory_.GetWeakPtr())),
+      base::TimeDelta::FromSeconds(20));
+
   FOR_EACH_OBSERVER(Observer, observers_, OfflinePageModelLoaded(this));
 
   CheckForExternalFileDeletion();
@@ -643,6 +656,11 @@ void OfflinePageModel::InformSavePageDone(const SavePageCallback& callback,
       static_cast<int>(SavePageResult::RESULT_COUNT));
   archive_manager_->GetStorageStats(
       base::Bind(&ReportStorageHistogramsAfterSave));
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE,
+      base::Bind(&OfflinePageModel::ExpirePages, weak_ptr_factory_.GetWeakPtr(),
+                 base::Bind(&OfflinePageModel::OnExpiredPagesCleared,
+                            weak_ptr_factory_.GetWeakPtr())));
   callback.Run(result, offline_id);
 }
 
@@ -819,6 +837,13 @@ void OfflinePageModel::CacheLoadedData(
     offline_pages_[offline_page.offline_id] = offline_page;
 }
 
+void OfflinePageModel::OnExpiredPagesCleared(
+    const int expired_page_count,
+    OfflinePageStorageManager::ClearStorageResult result) {
+  // TODO(romax) Add something here.
+}
+
+// static
 int64_t OfflinePageModel::GenerateOfflineId() {
   return base::RandGenerator(std::numeric_limits<int64_t>::max()) + 1;
 }