IDBObserver: Lifetime Management: Adding Observer

content/browser/indexed_db/indexed_db_transaction.cc

Index: content/browser/indexed_db/indexed_db_transaction.cc
diff --git a/content/browser/indexed_db/indexed_db_transaction.cc b/content/browser/indexed_db/indexed_db_transaction.cc
index be044833f4016c04a9e2f57348ba05707d7b7fb4..67677a46d11097dcb0c458399aea2145a47e81b2 100644
--- a/content/browser/indexed_db/indexed_db_transaction.cc
+++ b/content/browser/indexed_db/indexed_db_transaction.cc
@@ -424,15 +424,14 @@ void IndexedDBTransaction::CloseOpenCursors() {
   open_cursors_.clear();
 }
 
-void IndexedDBTransaction::AddPendingObserver(
-    std::unique_ptr<IndexedDBObserver> observer) {
-  pending_observers_.push_back(std::move(observer));
+void IndexedDBTransaction::AddPendingObserver(int64_t observer_id,
+                                              IndexedDBObserver* observer) {
+  pending_observers_[observer_id] = observer;
 }
 
 void IndexedDBTransaction::ActivatePendingObserver() {
-  for (size_t i = 0; i < pending_observers_.size(); i++) {
-    database_->active_observers_.push_back(std::move(pending_observers_[i]));
-  }
+  database_->active_observers_.insert(pending_observers_.begin(),
+                                      pending_observers_.end());
 }
 
 }  // namespace content