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

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

 /*
  * 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 519 matching lines @@
     }
     return FontDisplayAuto;
 }
 
 static CSSFontFace* createCSSFontFace(FontFace* fontFace, CSSValue* unicodeRange)
 {
     Vector<UnicodeRange> ranges;
     if (CSSValueList* rangeList = toCSSValueList(unicodeRange)) {
         unsigned numRanges = rangeList->length();
         for (unsigned i = 0; i < numRanges; i++) {
-            CSSUnicodeRangeValue* range = toCSSUnicodeRangeValue(rangeList->item(i));
+            const CSSUnicodeRangeValue* range = toCSSUnicodeRangeValue(rangeList->item(i));
             ranges.append(UnicodeRange(range->from(), range->to()));
         }
     }
 
     return new CSSFontFace(fontFace, ranges);
 }
 
 void FontFace::initCSSFontFace(Document* document, CSSValue* src)
 {
     m_cssFontFace = createCSSFontFace(this, m_unicodeRange.get());
     if (m_error)
         return;
 
     // Each item in the src property's list is a single CSSFontFaceSource. Put them all into a CSSFontFace.
     ASSERT(src);
     ASSERT(src->isValueList());
     CSSValueList* srcList = toCSSValueList(src);
     int srcLength = srcList->length();
 
     for (int i = 0; i < srcLength; i++) {
         // An item in the list either specifies a string (local font name) or a URL (remote font to download).
-        CSSFontFaceSrcValue* item = toCSSFontFaceSrcValue(srcList->item(i));
+        const CSSFontFaceSrcValue* item = toCSSFontFaceSrcValue(srcList->item(i));
         CSSFontFaceSource* source = nullptr;
 
         if (!item->isLocal()) {
             const Settings* settings = document ? document->settings() : nullptr;
             bool allowDownloading = settings && settings->downloadableBinaryFontsEnabled();
             if (allowDownloading && item->isSupportedFormat() && document) {
                 FontResource* fetched = item->fetch(document);
                 if (fetched) {
                     CSSFontSelector* fontSelector = document->styleEngine().fontSelector();
                     source = new RemoteFontFaceSource(fetched, fontSelector, CSSValueToFontDisplay(m_display.get()));
@@ skipping 48 matching lines @@
 {
     return m_cssFontFace->hadBlankText();
 }
 
 bool FontFace::hasPendingActivity() const
 {
     return m_status == Loading && getExecutionContext() && !getExecutionContext()->activeDOMObjectsAreStopped();
 }
 
 } // namespace blink