[IndexedDB] Adding transaction and value support to observers

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 43 matching lines @@
 class ScriptState;
 
 class MODULES_EXPORT IDBTransaction final
     : public EventTargetWithInlineData,
       public ActiveScriptWrappable<IDBTransaction>,
       public ContextLifecycleObserver {
   USING_GARBAGE_COLLECTED_MIXIN(IDBTransaction);
   DEFINE_WRAPPERTYPEINFO();
 
  public:
+  static IDBTransaction* createObserver(ExecutionContext*,
+                                        int64_t,
+                                        const HashSet<String>& scope,
+                                        IDBDatabase*);
+
   static IDBTransaction* createNonVersionChange(ScriptState*,
                                                 int64_t,
                                                 const HashSet<String>& scope,
                                                 WebIDBTransactionMode,
                                                 IDBDatabase*);
   static IDBTransaction* createVersionChange(
       ExecutionContext*,
       int64_t,
       IDBDatabase*,
       IDBOpenDBRequest*,
@@ skipping 61 matching lines @@
     return m_oldDatabaseMetadata.maxObjectStoreId;
   }
 
  protected:
   // EventTarget
   DispatchEventResult dispatchEventInternal(Event*) override;
 
  private:
   using IDBObjectStoreMap = HeapHashMap<String, Member<IDBObjectStore>>;
 
+  // For observer transactions.
+  IDBTransaction(ExecutionContext*,
+                 int64_t,
+                 const HashSet<String>& scope,
+                 IDBDatabase*);
+
   // For non-upgrade transactions.
   IDBTransaction(ScriptState*,
                  int64_t,
                  const HashSet<String>& scope,
                  WebIDBTransactionMode,
                  IDBDatabase*);
 
   // For upgrade transactions.
   IDBTransaction(ExecutionContext*,
                  int64_t,
@@ skipping 85 matching lines @@
   // This does not include a snapshot of the database's object store / index
   // metadata.
   //
   // Only valid for versionchange transactions.
   IDBDatabaseMetadata m_oldDatabaseMetadata;
 };
 
 }  // namespace blink
 
 #endif  // IDBTransaction_h