upconvertedString  640 Source/wtf/text/StringImpl.cpp     RefPtr<StringImpl> upconverted = upconvertedString();
upconvertedString  728 Source/wtf/text/StringImpl.cpp     RefPtr<StringImpl> upconverted = upconvertedString();
upconvertedString  753 Source/wtf/text/StringImpl.cpp     RefPtr<StringImpl> upconverted = upconvertedString();
upconvertedString  400 Source/wtf/text/StringImpl.h     PassRefPtr<StringImpl> upconvertedString();