[Offline Pages] Delete associated page along with bookmark.

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 9c6efb7aaca737e960f67ac1ce10672776b32f3a..c45c0930ad8c25b9b39efb6d6ed138fef72d7d65 100644
--- a/components/offline_pages/offline_page_model.h
+++ b/components/offline_pages/offline_page_model.h
@@ -15,7 +15,7 @@
 #include "base/supports_user_data.h"
 #include "components/offline_pages/offline_event_logger.h"
 #include "components/offline_pages/offline_page_archiver.h"
-#include "components/offline_pages/offline_page_storage_manager.h"
+#include "components/offline_pages/offline_page_bookmark_observer.h"
 #include "components/offline_pages/offline_page_types.h"
 
 class GURL;
@@ -23,11 +23,17 @@ namespace base {
 class Time;
 }  // namespace base
 
+namespace bookmarks {
+class BookmarkNode;
+}  // namespace bookmarks
+
 namespace offline_pages {
 
 struct ClientId;
 struct OfflinePageItem;
 
+class ClientPolicyController;
+
 // Service for saving pages offline, storing the offline copy and metadata, and
 // retrieving them upon request.
 //
@@ -193,6 +199,13 @@ class OfflinePageModel : public base::SupportsUserData {
                            const base::Time& expiration_time,
                            const base::Callback<void(bool)>& callback) = 0;
 
+  // Expire the offline page whose associated bookmark was deleted.
+  virtual void ExpireRemovedBookmarkPage(
+      const bookmarks::BookmarkNode* node) = 0;
+
+  // Get the bookmark model observer.
+  virtual OfflinePageBookmarkObserver* GetBookmarkObserver() = 0;
+
   // Returns the policy controller.
   virtual ClientPolicyController* GetPolicyController() = 0;