Temporarily introduce ImageResourceInfo::setIsPlaceholder()

third_party/WebKit/Source/core/loader/resource/ImageResource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@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
@@ skipping 84 matching lines @@
   bool hasCacheControlNoStoreHeader() const override {
     return m_resource->hasCacheControlNoStoreHeader();
   }
   const ResourceError& resourceError() const override {
     return m_resource->resourceError();
   }
 
   void decodeError(bool allDataReceived) override {
     m_resource->decodeError(allDataReceived);
   }
+  void setIsPlaceholder(bool isPlaceholder) override {
+    m_resource->m_isPlaceholder = isPlaceholder;
+  }
   void setDecodedSize(size_t size) override {
     m_resource->setDecodedSize(size);
   }
   void willAddClientOrObserver() override {
     m_resource->willAddClientOrObserver(Resource::MarkAsReferenced);
   }
   void didRemoveClientOrObserver() override {
     m_resource->didRemoveClientOrObserver();
   }
   void emulateLoadStartedForInspector(
@@ skipping 399 matching lines @@
 
 void ImageResource::updateImage(
     PassRefPtr<SharedBuffer> sharedBuffer,
     ImageResourceContent::UpdateImageOption updateImageOption,
     bool allDataReceived) {
   getContent()->updateImage(std::move(sharedBuffer), updateImageOption,
                             allDataReceived);
 }
 
 }  // namespace blink