[Offline Pages] Refactoring deletion of pages with same urls.

components/offline_pages/offline_page_model_impl.h

Index: components/offline_pages/offline_page_model_impl.h
diff --git a/components/offline_pages/offline_page_model_impl.h b/components/offline_pages/offline_page_model_impl.h
index afda58cb95f5861694a18595f9c491adec5e1b65..1efb687e3ad325976d84351883ad18f7423d30e0 100644
--- a/components/offline_pages/offline_page_model_impl.h
+++ b/components/offline_pages/offline_page_model_impl.h
@@ -214,8 +214,8 @@ class OfflinePageModelImpl : public OfflinePageModel, public KeyedService {
                                     bool success);
 
   // Callbacks for deleting pages with same URL when saving pages.
-  void OnPagesFoundWithSameURL(const ClientId& client_id,
-                               int64_t offline_id,
+  void DeleteExistingPagesWithSameURL(const OfflinePageItem& offline_page);
+  void OnPagesFoundWithSameURL(const OfflinePageItem& offline_page,
                                size_t pages_allowed,
                                const MultipleOfflinePageItemResult& items);
   void OnDeleteOldPagesWithSameURL(DeletePageResult result);