Change StyleResolverState.styleImage() to take a const CSSValue&

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

 /*
  * Copyright (C) 2012 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 80 matching lines @@
             return image;
     }
     return image;
 }
 
 bool CSSImageSetValue::isCachePending(float deviceScaleFactor) const
 {
     return m_isCachePending || deviceScaleFactor != m_cachedScaleFactor;
 }
 
-StyleFetchedImageSet* CSSImageSetValue::cachedImageSet(float deviceScaleFactor)
+StyleFetchedImageSet* CSSImageSetValue::cachedImageSet(float deviceScaleFactor) const
 {
     ASSERT(!isCachePending(deviceScaleFactor));
     return m_cachedImageSet.get();
 }
 
 StyleFetchedImageSet* CSSImageSetValue::cacheImageSet(Document* document, float deviceScaleFactor, const ResourceLoaderOptions& options)
 {
     ASSERT(document);
 
     if (!m_imagesInSet.size())
@@ skipping 73 matching lines @@
 PassRefPtrWillBeRawPtr<CSSImageSetValue> CSSImageSetValue::valueWithURLsMadeAbsolute()
 {
     RefPtrWillBeRawPtr<CSSImageSetValue> value = CSSImageSetValue::create();
     for (auto& item : *this)
         item->isImageValue() ? value->append(toCSSImageValue(*item).valueWithURLMadeAbsolute()) : value->append(item);
     return value.release();
 }
 
 
 } // namespace blink