Make calls to AtomicString(const String&) explicit in css/

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 80 matching lines @@
 
 static PassRefPtr<CSSValue> parseCSSValue(const String& s, CSSPropertyID propertyID)
 {
     if (s.isEmpty())
         return 0;
     RefPtr<MutableStylePropertySet> parsedStyle = MutableStylePropertySet::create();
     CSSParser::parseValue(parsedStyle.get(), propertyID, s, true, HTMLStandardMode, 0);
     return parsedStyle->getPropertyCSSValue(propertyID);
 }
 
-PassRefPtr<FontFace> FontFace::create(const String& family, const String& source, const Dictionary& descriptors, ExceptionState& exceptionState)
+PassRefPtr<FontFace> FontFace::create(const AtomicString& family, const String& source, const Dictionary& descriptors, ExceptionState& exceptionState)
 {
     RefPtr<CSSValue> src = parseCSSValue(source, CSSPropertySrc);
     if (!src || !src->isValueList()) {
         exceptionState.throwUninformativeAndGenericDOMException(SyntaxError);
         return 0;
     }
 
     RefPtr<FontFace> fontFace = adoptRef<FontFace>(new FontFace(src));
     fontFace->setFamily(family, exceptionState);
     if (exceptionState.hadException())
@@ skipping 172 matching lines @@
     return true;
 }
 
 bool FontFace::setFamilyValue(CSSValueList* familyList)
 {
     // The font-family descriptor has to have exactly one family name.
     if (familyList->length() != 1)
         return false;
 
     CSSPrimitiveValue* familyValue = toCSSPrimitiveValue(familyList->itemWithoutBoundsCheck(0));
-    String family;
+    AtomicString family;
     if (familyValue->isString()) {
-        family = familyValue->getStringValue();
+        family = AtomicString(familyValue->getStringValue());
     } else if (familyValue->isValueID()) {
         // We need to use the raw text for all the generic family types, since @font-face is a way of actually
         // defining what font to use for those types.
         switch (familyValue->getValueID()) {
         case CSSValueSerif:
             family =  FontFamilyNames::webkit_serif;
             break;
         case CSSValueSansSerif:
             family =  FontFamilyNames::webkit_sans_serif;
             break;
@@ skipping 224 matching lines @@
         unsigned numRanges = rangeList->length();
         for (unsigned i = 0; i < numRanges; i++) {
             CSSUnicodeRangeValue* range = toCSSUnicodeRangeValue(rangeList->itemWithoutBoundsCheck(i));
             cssFontFace->ranges().add(range->from(), range->to());
         }
     }
     return cssFontFace;
 }
 
 } // namespace WebCore