Phase III Step 2: Call imageNotifyFinished() and image load event after SVG loading completes

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 164 matching lines @@
 bool ImageResource::CanReuse(const FetchParameters& params) const {
   // If the image is a placeholder, but this fetch doesn't allow a
   // placeholder, then do not reuse this resource.
   if (params.GetPlaceholderImageRequestType() !=
           FetchParameters::kAllowPlaceholder &&
       placeholder_option_ != PlaceholderOption::kDoNotReloadPlaceholder)
     return false;
   return true;
 }
 
+bool ImageResource::CanUseCacheValidator() const {
+  // Disable revalidation while ImageResourceContent is still waiting for
+  // SVG load completion.
+  // TODO(hiroshige): Clean up revalidation-related dependencies.
+  if (!GetContent()->IsLoaded())
+    return false;
+
+  return Resource::CanUseCacheValidator();
+}
+
 ImageResource* ImageResource::Create(const ResourceRequest& request) {
   return new ImageResource(request, ResourceLoaderOptions(),
                            ImageResourceContent::CreateNotStarted(), false);
 }
 
 ImageResource::ImageResource(const ResourceRequest& resource_request,
                              const ResourceLoaderOptions& options,
                              ImageResourceContent* content,
                              bool is_placeholder)
     : Resource(resource_request, kImage, options),
@@ skipping 418 matching lines @@
     //    reloading in Step 3 due to notifyObservers()'s
     //    schedulingReloadOrShouldReloadBrokenPlaceholder() check.
     // 3. reloadIfLoFiOrPlaceholderImage() is called via ResourceFetcher
     //    (a) via didFinishLoading() called in decodeError(), or
     //    (b) after returning ImageResource::updateImage().
     DecodeError(all_data_received);
   }
 }
 
 }  // namespace blink