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

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

 /*
  * 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 17 matching lines @@
     DoNotCheckConstants,
     ConstructorCallWith=ScriptState,
 ] interface Internals {
     DOMString address(Node node);
 
     GCObservation observeGC(any observed);
 
     [RaisesException] DOMString elementLayoutTreeAsText(Element element);
     boolean isPreloaded(DOMString url);
     boolean isPreloadedBy(DOMString url, Document document);
+    boolean isLoading(DOMString url);
     boolean isLoadingFromMemoryCache(DOMString url);
     unsigned long getResourcePriority (DOMString url, Document document);
     DOMString getResourceHeader (DOMString url, DOMString header, Document document);
 
     boolean isSharingStyle(Element element1, Element element2);
 
     CSSStyleDeclaration computedStyleIncludingVisitedInfo(Node node);
 
     ShadowRoot createUserAgentShadowRoot(Element host);
 
@@ skipping 308 matching lines @@
     DOMString getScrollAnimationState(Node node);
 
     DOMString getProgrammaticScrollAnimationState(Node node);
 
     ClientRect visualRect(Node node);
 
     OriginTrialsTest originTrialsTest();
 
     void crash();
 };