IDBObserver: Lifetime Management: Adding Observer

content/browser/indexed_db/indexed_db_dispatcher_host.h

Index: content/browser/indexed_db/indexed_db_dispatcher_host.h
diff --git a/content/browser/indexed_db/indexed_db_dispatcher_host.h b/content/browser/indexed_db/indexed_db_dispatcher_host.h
index ba7a65fe36a28ac86dabe84b51889b2aa7d1e551..16ceb029bb1f8979b35165cedfe351ce898f2312 100644
--- a/content/browser/indexed_db/indexed_db_dispatcher_host.h
+++ b/content/browser/indexed_db/indexed_db_dispatcher_host.h
@@ -174,6 +174,12 @@ class IndexedDBDispatcherHost : public BrowserMessageFilter {
     void OnVersionChangeIgnored(int32_t ipc_database_id);
     void OnDestroyed(int32_t ipc_database_id);
 
+    void OnObserve(int32_t ipc_database_id,
+                   int64_t transaction_id,
+                   int32_t observer_id);
+    void OnUnobserve(int32_t ipc_database_id,
+                     const std::vector<int32_t>& observer_ids_to_remove);
+
     void OnGet(const IndexedDBHostMsg_DatabaseGet_Params& params);
     void OnGetAll(const IndexedDBHostMsg_DatabaseGetAll_Params& params);
     // OnPutWrapper starts on the IO thread so that it can grab BlobDataHandles
@@ -299,7 +305,6 @@ class IndexedDBDispatcherHost : public BrowserMessageFilter {
   // Only access on IndexedDB thread.
   std::unique_ptr<DatabaseDispatcherHost> database_dispatcher_host_;
   std::unique_ptr<CursorDispatcherHost> cursor_dispatcher_host_;
-
   // Used to set file permissions for blob storage.
   int ipc_process_id_;