IndexedDB: Clean up boilerplate when throwing TransactionInactiveError

third_party/WebKit/Source/modules/indexeddb/IDBTransaction.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 123 matching lines @@
   bool HasPendingActivity() const final;
 
   // For use in IDBObjectStore::IsNewlyCreated(). The rest of the code should
   // use IDBObjectStore::IsNewlyCreated() instead of calling this method
   // directly.
   int64_t OldMaxObjectStoreId() const {
     DCHECK(IsVersionChange());
     return old_database_metadata_.max_object_store_id;
   }
 
+  // Returns a detailed message to use when throwing TransactionInactiveError,
+  // depending on whether the transaction is just inactive or has finished.
+  const char* InactiveErrorMessage() const;
+
  protected:
   // EventTarget
   DispatchEventResult DispatchEventInternal(Event*) override;
 
  private:
   using IDBObjectStoreMap = HeapHashMap<String, Member<IDBObjectStore>>;
 
   // For observer transactions.
   IDBTransaction(ExecutionContext*,
                  int64_t,
@@ skipping 98 matching lines @@
   // This does not include a snapshot of the database's object store / index
   // metadata.
   //
   // Only valid for versionchange transactions.
   IDBDatabaseMetadata old_database_metadata_;
 };
 
 }  // namespace blink
 
 #endif  // IDBTransaction_h