Revert of Enable a srcset 0x descriptor

Source/core/html/parser/HTMLSrcsetParser.cpp

 /*
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 167 matching lines @@
             // The value of the 'h' descriptor is not used.
             if (result.hasDensity() || result.hasHeight())
                 return false;
             int resourceHeight = it->toInt(attribute, isValid);
             if (!isValid || resourceHeight <= 0)
                 return false;
             result.setResourceHeight(resourceHeight);
         } else if (c == 'x') {
             if (result.hasDensity() || result.hasHeight() || result.hasWidth())
                 return false;
-            float density = it->toFloat(attribute, isValid);
+            int density = it->toFloat(attribute, isValid);
             if (!isValid || density < 0)
                 return false;
             result.setDensity(density);
         }
     }
     return true;
 }
 
 static bool parseDescriptors(const String& attribute, Vector<DescriptorToken>& descriptors, DescriptorParsingResult& result)
 {
@@ skipping 142 matching lines @@
     Vector<ImageCandidate> imageCandidates;
     imageCandidates.append(srcsetImageCandidate);
 
     if (!srcAttribute.isEmpty())
         imageCandidates.append(ImageCandidate(srcAttribute, 0, srcAttribute.length(), DescriptorParsingResult(), ImageCandidate::SrcOrigin));
 
     return pickBestImageCandidate(deviceScaleFactor, sourceSize, imageCandidates).toString();
 }
 
 }