Fix crash when setting invalid URL on content

third_party/WebKit/Source/core/css/CSSCrossfadeValue.cpp

 /*
  * Copyright (C) 2011 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 48 matching lines @@
 
     return false;
 }
 
 static ImageResource* cachedImageForCSSValue(CSSValue* value, Document* document)
 {
     if (!value)
         return nullptr;
 
     if (value->isImageValue()) {
-        StyleFetchedImage* styleImageResource = toCSSImageValue(value)->cacheImage(document);
+        StyleImage* styleImageResource = toCSSImageValue(value)->cacheImage(document);
         if (!styleImageResource)
             return nullptr;
 
         return styleImageResource->cachedImage();
     }
 
     if (value->isImageGeneratorValue()) {
         toCSSImageGeneratorValue(value)->loadSubimages(document);
         // FIXME: Handle CSSImageGeneratorValue (and thus cross-fades with gradients and canvas).
         return nullptr;
@@ skipping 201 matching lines @@
     visitor->trace(m_fromValue);
     visitor->trace(m_toValue);
     visitor->trace(m_percentageValue);
     visitor->trace(m_cachedFromImage);
     visitor->trace(m_cachedToImage);
     visitor->trace(m_crossfadeSubimageObserver);
     CSSImageGeneratorValue::traceAfterDispatch(visitor);
 }
 
 } // namespace blink