Drop dependency on LayoutObject in fetch/

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 22 matching lines @@
 #include "wtf/HashMap.h"
 
 namespace blink {
 
 class ImageResourceClient;
 class FetchRequest;
 class ResourceFetcher;
 class FloatSize;
 class Length;
 class MemoryCache;
-class LayoutObject;
 class SecurityOrigin;
 
 class CORE_EXPORT ImageResource final : public Resource, public ImageObserver {
     friend class MemoryCache;
 
 public:
     typedef ImageResourceClient ClientType;
 
     static ResourcePtr<ImageResource> fetch(FetchRequest&, ResourceFetcher*);
 
     ImageResource(blink::Image*);
     // Exposed for testing
     ImageResource(const ResourceRequest&, blink::Image*);
     ~ImageResource() override;
 
     void load(ResourceFetcher*, const ResourceLoaderOptions&) override;
 
     blink::Image* image(); // Returns the nullImage() if the image is not available yet.
     bool hasImage() const { return m_image.get(); }
-    // Side effect: ensures decoded image is in cache, therefore should only be called when about to draw the image.
-    bool currentFrameKnownToBeOpaque(const LayoutObject*);
 
     static std::pair<blink::Image*, float> brokenImage(float deviceScaleFactor); // Returns an image and the image's resolution scale factor.
     bool willPaintBrokenImage() const;
 
     // Assumes that image rotation or scale doesn't effect the image size being empty or not.
     bool canRender() { return !errorOccurred() && !imageSize(DoNotRespectImageOrientation, 1).isEmpty(); }
 
     bool usesImageContainerSize() const;
     bool imageHasRelativeWidth() const;
     bool imageHasRelativeHeight() const;
@@ skipping 69 matching lines @@
 
     RefPtr<blink::Image> m_image;
     bool m_hasDevicePixelRatioHeaderValue;
 };
 
 DEFINE_RESOURCE_TYPE_CASTS(Image);
 
 }
 
 #endif