Remove indexed_db_messages.h.

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 c37b7e912d2c9f7c344b19408c21e6e65d633853..84d3a89d6b9b0312f19e024e13edbd293a0dc501 100644
--- a/content/browser/indexed_db/indexed_db_database.cc
+++ b/content/browser/indexed_db/indexed_db_database.cc
@@ -114,11 +114,6 @@ class IndexedDBDatabase::OpenRequest
       : ConnectionRequest(db), pending_(std::move(pending_connection)) {}
 
   void Perform() override {
-    if (!pending_->callbacks->IsValid()) {
-      db_->RequestComplete(this);
-      return;
-    }
-
     if (db_->metadata_.id == kInvalidId) {
       // The database was deleted then immediately re-opened; OpenInternal()
       // recreates it in the backing store.