[ImageResource 0b] Decouple ImageResourceObserver::imageNotifyFinished() from notifyFinished()

third_party/WebKit/Source/core/fetch/ImageResource.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 172 matching lines @@
   bool hasClientsOrObservers() const override {
     return Resource::hasClientsOrObservers() || !m_observers.isEmpty() ||
            !m_finishedObservers.isEmpty();
   }
   void clear();
 
   void createImage();
   void updateImage(bool allDataReceived);
   void updateImageAndClearBuffer();
   void clearImage();
+  enum NotifyFinishOption { ShouldNotifyFinish, DoNotNotifyFinish };
   // If not null, changeRect is the changed part of the image.
-  void notifyObservers(const IntRect* changeRect = nullptr);
+  void notifyObservers(NotifyFinishOption, const IntRect* changeRect = nullptr);
 
   void ensureImage();
 
   void checkNotify() override;
   void notifyObserversInternal();
   void markObserverFinished(ImageResourceObserver*);
 
   void doResetAnimation();
 
   void destroyDecodedDataIfPossible() override;
@@ skipping 26 matching lines @@
   // Indicates if this resource's encoded image data can be purged and refetched
   // from disk cache to save memory usage. See crbug/664437.
   bool m_isRefetchableDataFromDiskCache;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Image);
 
 }  // namespace blink
 
 #endif