IDBObserver: Lifetime Management: Adding Observer

content/browser/indexed_db/indexed_db_database.cc

Index: content/browser/indexed_db/indexed_db_database.cc
diff --git a/content/browser/indexed_db/indexed_db_database.cc b/content/browser/indexed_db/indexed_db_database.cc
index 97f47a04d14cd726d5f86b16f2b6c7a9502a7995..f2212d3083d49677da5b802dcb2993bd3fc60cb9 100644
--- a/content/browser/indexed_db/indexed_db_database.cc
+++ b/content/browser/indexed_db/indexed_db_database.cc
@@ -29,6 +29,7 @@
 #include "content/browser/indexed_db/indexed_db_cursor.h"
 #include "content/browser/indexed_db/indexed_db_factory.h"
 #include "content/browser/indexed_db/indexed_db_index_writer.h"
+#include "content/browser/indexed_db/indexed_db_observer.h"
 #include "content/browser/indexed_db/indexed_db_pending_connection.h"
 #include "content/browser/indexed_db/indexed_db_return_value.h"
 #include "content/browser/indexed_db/indexed_db_tracing.h"
@@ -541,6 +542,14 @@ void IndexedDBDatabase::Abort(int64_t transaction_id,
     transaction->Abort(error);
 }
 
+void IndexedDBDatabase::Observe(int64_t transaction_id, int64_t observer_id) {
+  IndexedDBTransaction* transaction = GetTransaction(transaction_id);
+  if (!transaction)
+    return;
+  transaction->AddPendingObserver(
+      base::WrapUnique(new IndexedDBObserver(observer_id)));
+}
+
 void IndexedDBDatabase::GetAll(int64_t transaction_id,
                                int64_t object_store_id,
                                int64_t index_id,