Reduced the callers to the non-const version of CSSValueList::item()

third_party/WebKit/Source/core/frame/FrameSerializer.cpp

 /*
  * Copyright (C) 2011 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 420 matching lines @@
     // The background-image and list-style-image (for ul or ol) are the CSS properties
     // that make use of images. We iterate to make sure we include any other
     // image properties there might be.
     unsigned propertyCount = styleDeclaration->propertyCount();
     for (unsigned i = 0; i < propertyCount; ++i) {
         CSSValue* cssValue = styleDeclaration->propertyAt(i).value();
         retrieveResourcesForCSSValue(cssValue, document);
     }
 }
 
-void FrameSerializer::retrieveResourcesForCSSValue(CSSValue* cssValue, Document& document)
+void FrameSerializer::retrieveResourcesForCSSValue(const CSSValue* cssValue, Document& document)
 {
     if (cssValue->isImageValue()) {
-        CSSImageValue* imageValue = toCSSImageValue(cssValue);
+        const CSSImageValue* imageValue = toCSSImageValue(cssValue);
         if (imageValue->isCachePending())
             return;
         StyleImage* styleImage = imageValue->cachedImage();
         if (!styleImage || !styleImage->isImageResource())
             return;
 
         addImageToResources(styleImage->cachedImage(), styleImage->cachedImage()->url());
     } else if (cssValue->isFontFaceSrcValue()) {
-        CSSFontFaceSrcValue* fontFaceSrcValue = toCSSFontFaceSrcValue(cssValue);
+        const CSSFontFaceSrcValue* fontFaceSrcValue = toCSSFontFaceSrcValue(cssValue);
         if (fontFaceSrcValue->isLocal()) {
             return;
         }
 
         addFontToResources(fontFaceSrcValue->fetch(&document));
     } else if (cssValue->isValueList()) {
-        CSSValueList* cssValueList = toCSSValueList(cssValue);
+        const CSSValueList* cssValueList = toCSSValueList(cssValue);
         for (unsigned i = 0; i < cssValueList->length(); i++)
             retrieveResourcesForCSSValue(cssValueList->item(i), document);
     }
 }
 
 // Returns MOTW (Mark of the Web) declaration before html tag which is in
 // HTML comment, e.g. "<!-- saved from url=(%04d)%s -->"
 // See http://msdn2.microsoft.com/en-us/library/ms537628(VS.85).aspx.
 String FrameSerializer::markOfTheWebDeclaration(const KURL& url)
 {
     StringBuilder builder;
     bool emitsMinus = false;
     CString orignalUrl = url.getString().ascii();
     for (const char* string = orignalUrl.data(); *string; ++string) {
         const char ch = *string;
         if (ch == '-' && emitsMinus) {
             builder.append("%2D");
             emitsMinus = false;
             continue;
         }
         emitsMinus = ch == '-';
         builder.append(ch);
     }
     CString escapedUrl = builder.toString().ascii();
     return String::format("saved from url=(%04d)%s", static_cast<int>(escapedUrl.length()), escapedUrl.data());
 }
 
 } // namespace blink