vprintf            92 Source/wtf/DataLog.cpp     dataFile().vprintf(format, argList);
vprintf            49 Source/wtf/FilePrintStream.h     virtual void vprintf(const char* format, va_list) OVERRIDE WTF_ATTRIBUTE_PRINTF(2, 0);
vprintf            42 Source/wtf/PrintStream.cpp     vprintf(format, argList);
vprintf            46 Source/wtf/PrintStream.h     virtual void vprintf(const char* format, va_list) WTF_ATTRIBUTE_PRINTF(2, 0) = 0;