Refactor ImageLoader::UpdateFromElement(kUpdateForcedReload)

third_party/WebKit/Source/core/loader/ImageLoader.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010 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 407 matching lines @@
                                     ReferrerPolicy referrer_policy) {
   AtomicString image_source_url = element_->ImageSourceURL();
   suppress_error_events_ = (update_behavior == kUpdateSizeChanged);
 
   if (update_behavior == kUpdateIgnorePreviousError)
     ClearFailedLoadURL();
 
   if (!failed_load_url_.IsEmpty() && image_source_url == failed_load_url_)
     return;
 
+  if (loading_image_document_ && update_behavior == kUpdateForcedReload) {
+    // Prepares for reloading ImageDocument.
+    // We turn the ImageLoader into non-ImageDocument here, and proceed to
+    // reloading just like an ordinary <img> element below.
+    loading_image_document_ = false;
+    image_resource_for_image_document_ = nullptr;
+    ClearImage();
+  }
+
   // Prevent the creation of a ResourceLoader (and therefore a network request)
   // for ImageDocument loads. In this case, the image contents have already been
   // requested as a main resource and ImageDocumentParser will take care of
   // funneling the main resource bytes into image_, so just create an
   // ImageResource to be populated later.
-  if (loading_image_document_ && update_behavior != kUpdateForcedReload) {
+  if (loading_image_document_) {
     ImageResource* image_resource = ImageResource::Create(
         ResourceRequest(ImageSourceToKURL(element_->ImageSourceURL())));
     image_resource->SetStatus(ResourceStatus::kPending);
     image_resource->NotifyStartLoad();
     SetImageForImageDocument(image_resource);
     return;
   }
 
   // If we have a pending task, we have to clear it -- either we're now loading
   // immediately, or we need to reset the task's state.
@@ skipping 224 matching lines @@
 }
 
 void ImageLoader::ElementDidMoveToNewDocument() {
   if (load_delay_counter_)
     load_delay_counter_->DocumentChanged(element_->GetDocument());
   ClearFailedLoadURL();
   ClearImage();
 }
 
 }  // namespace blink