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

third_party/WebKit/Source/core/fileapi/FileReader.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:
  *
  *     * 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef FileReader_h
 #define FileReader_h
 
+#include "bindings/core/v8/V8GCRoot.h"
 #include "core/CoreExport.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/events/EventTarget.h"
 #include "core/fileapi/FileError.h"
 #include "core/fileapi/FileReaderLoader.h"
 #include "core/fileapi/FileReaderLoaderClient.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 
 class Blob;
 class DOMArrayBuffer;
 class ExceptionState;
 class ExecutionContext;
 class StringOrArrayBuffer;
 
-class CORE_EXPORT FileReader final : public RefCountedGarbageCollectedEventTargetWithInlineData<FileReader>, public ContextLifecycleObserver, public FileReaderLoaderClient {
+class CORE_EXPORT FileReader final : public RefCountedGarbageCollectedEventTargetWithInlineData<FileReader>, public ContextLifecycleObserver, public FileReaderLoaderClient, public V8GCRoot {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(FileReader);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(FileReader);
 public:
     static FileReader* create(ExecutionContext*);
 
     ~FileReader() override;
 
     enum ReadyState {
         EMPTY = 0,
@@ skipping 66 matching lines @@
 
     OwnPtr<FileReaderLoader> m_loader;
     Member<FileError> m_error;
     double m_lastProgressNotificationTimeMS;
     int m_asyncOperationId;
 };
 
 } // namespace blink
 
 #endif // FileReader_h