DO NOT COMMIT: Experimental removal of encoded image data

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 104 matching lines @@
 
     bool isImage() const override { return true; }
 
     // ImageObserver
     void decodedSizeChangedTo(const blink::Image*, size_t newSize) override;
     void didDraw(const blink::Image*) override;
 
     bool shouldPauseAnimation(const blink::Image*) override;
     void animationAdvanced(const blink::Image*) override;
     void changedInRect(const blink::Image*, const IntRect&) override;
+    void requireReloading(const blink::Image*) override;
 
     // MultipartImageResourceParser::Client
     void onePartInMultipartReceived(const ResourceResponse&) final;
     void multipartDataReceived(const char*, size_t) final;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit ImageResource(blink::Image*, const ResourceLoaderOptions&);
 
@@ skipping 28 matching lines @@
     void ensureImage();
 
     void checkNotify() override;
     void notifyObserversInternal(MarkFinishedOption);
     void markObserverFinished(ImageResourceObserver*);
 
     void doResetAnimation();
 
     void destroyDecodedDataIfPossible() override;
     void destroyDecodedDataForFailedRevalidation() override;
+    void myPrune() override;
 
     float m_devicePixelRatioHeaderValue;
 
     Member<MultipartImageResourceParser> m_multipartParser;
     RefPtr<blink::Image> m_image;
     MultipartParsingState m_multipartParsingState = MultipartParsingState::WaitingForFirstPart;
     bool m_hasDevicePixelRatioHeaderValue;
     HashCountedSet<ImageResourceObserver*> m_observers;
     HashCountedSet<ImageResourceObserver*> m_finishedObservers;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Image);
 
 } // namespace blink
 
 #endif