[Offline Pages] Removes two-step expiration related.

components/offline_pages/offline_page_model.h

Index: components/offline_pages/offline_page_model.h
diff --git a/components/offline_pages/offline_page_model.h b/components/offline_pages/offline_page_model.h
index 272f6dc9c0cfe2744853758c7dca29c5b62b6a4c..1b0056dd2b7d26f88b2a0b924052c146c993588b 100644
--- a/components/offline_pages/offline_page_model.h
+++ b/components/offline_pages/offline_page_model.h
@@ -146,10 +146,6 @@ class OfflinePageModel : public base::SupportsUserData {
   // Gets all offline pages.
   virtual void GetAllPages(const MultipleOfflinePageItemCallback& callback) = 0;
 
-  // Gets all offline pages including expired ones.
-  virtual void GetAllPagesWithExpired(
-      const MultipleOfflinePageItemCallback& callback) = 0;
-
   // Gets all offline ids where the offline page has the matching client id.
   virtual void GetOfflineIdsForClientId(
       const ClientId& client_id,
@@ -165,12 +161,6 @@ class OfflinePageModel : public base::SupportsUserData {
       const GURL& online_url,
       const MultipleOfflinePageItemCallback& callback) = 0;
 
-  // Marks pages with |offline_ids| as expired and deletes the associated
-  // archive files.
-  virtual void ExpirePages(const std::vector<int64_t>& offline_ids,
-                           const base::Time& expiration_time,
-                           const base::Callback<void(bool)>& callback) = 0;
-
   // Returns the policy controller.
   virtual ClientPolicyController* GetPolicyController() = 0;