Do not rely on broken images in http/tests/multipart/ tests

third_party/WebKit/Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 389 matching lines @@
 bool Internals::isPreloaded(const String& url) {
   return isPreloadedBy(url, contextDocument());
 }
 
 bool Internals::isPreloadedBy(const String& url, Document* document) {
   if (!document)
     return false;
   return document->fetcher()->isPreloadedForTest(document->completeURL(url));
 }
 
+bool Internals::isLoading(const String& url) {
+  if (!contextDocument())
+    return false;
+  const String cacheIdentifier =
+      contextDocument()->fetcher()->getCacheIdentifier();
+  Resource* resource = memoryCache()->resourceForURL(
+      contextDocument()->completeURL(url), cacheIdentifier);
+  // We check loader() here instead of isLoading(), because a multipart
+  // ImageResource lies isLoading() == false after the first part is loaded.
+  return resource && resource->loader();
+}
+
 bool Internals::isLoadingFromMemoryCache(const String& url) {
   if (!contextDocument())
     return false;
   const String cacheIdentifier =
       contextDocument()->fetcher()->getCacheIdentifier();
   Resource* resource = memoryCache()->resourceForURL(
       contextDocument()->completeURL(url), cacheIdentifier);
   return resource && resource->getStatus() == Resource::Cached;
 }
 
@@ skipping 2662 matching lines @@
     return ClientRect::create();
 
   return ClientRect::create(FloatRect(node->layoutObject()->visualRect()));
 }
 
 void Internals::crash() {
   CHECK(false) << "Intentional crash";
 }
 
 }  // namespace blink