Break StyleImage dependency on LayoutObject

third_party/WebKit/Source/core/loader/resource/ImageResourceObserver.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.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef ImageResourceObserver_h
 #define ImageResourceObserver_h
 
 #include "core/CoreExport.h"
+#include "core/style/StyleImage.h"
 #include "platform/graphics/ImageAnimationPolicy.h"
 #include "platform/loader/fetch/ResourceLoadPriority.h"
 #include "platform/wtf/Forward.h"
 
 namespace blink {
 
 class ImageResourceContent;
 class IntRect;
 
 class CORE_EXPORT ImageResourceObserver {
  public:
   virtual ~ImageResourceObserver() {}
 
   // Called whenever a frame of an image changes, either because we got more
   // data from the network or because we are animating. If not null, the IntRect
   // is the changed rect of the image.
-  virtual void ImageChanged(ImageResourceContent*, const IntRect* = 0) {}
+  virtual void ImageChanged(ImageResourceContent*, const IntRect* = nullptr) {}
+
+  // Sub-classes that have an associated image need to override this function
+  // to get notified of any image change.
+  virtual void ImageChanged(WrappedImagePtr, const IntRect* = nullptr) {}
 
   // Called just after imageChanged() if all image data is received or errored.
   // TODO(hiroshige): Merge imageNotifyFinished() into imageChanged().
   virtual void ImageNotifyFinished(ImageResourceContent*) {}
 
   // Called to find out if this client wants to actually display the image. Used
   // to tell when we can halt animation. Content nodes that hold image refs for
   // example would not render the image, but LayoutImages would (assuming they
   // have visibility: visible and their layout tree isn't hidden e.g., in the
   // b/f cache or in a background tab).
@@ skipping 14 matching lines @@
 
   // Name for debugging, e.g. shown in memory-infra.
   virtual String DebugName() const = 0;
 
   static bool IsExpectedType(ImageResourceObserver*) { return true; }
 };
 
 }  // namespace blink
 
 #endif