[v8 gc] Introduce a base class for all objects that can have pending activity

third_party/WebKit/Source/modules/filesystem/DOMFileSystem.cpp

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 67 matching lines @@
     rootURL.append(isolatedPathPrefix);
     rootURL.append('/');
     rootURL.append(filesystemId);
     rootURL.append('/');
 
     return DOMFileSystem::create(context, filesystemName.toString(), FileSystemTypeIsolated, KURL(ParsedURLString, rootURL.toString()));
 }
 
 DOMFileSystem::DOMFileSystem(ExecutionContext* context, const String& name, FileSystemType type, const KURL& rootURL)
     : DOMFileSystemBase(context, name, type, rootURL)
+    , ActiveScriptWrappable(this)
     , ActiveDOMObject(context)
     , m_numberOfPendingCallbacks(0)
     , m_rootEntry(DirectoryEntry::create(this, DOMFilePath::root))
 {
 }
 
 DirectoryEntry* DOMFileSystem::root() const
 {
     return m_rootEntry.get();
 }
@@ skipping 76 matching lines @@
 }
 
 DEFINE_TRACE(DOMFileSystem)
 {
     DOMFileSystemBase::trace(visitor);
     ActiveDOMObject::trace(visitor);
     visitor->trace(m_rootEntry);
 }
 
 } // namespace blink