PNGContainsFallbackMarker  821 ui/base/resource/resource_bundle.cc   *fell_back_to_1x = PNGContainsFallbackMarker(buf, size);
PNGContainsFallbackMarker  339 ui/base/resource/resource_bundle.h   static bool PNGContainsFallbackMarker(const unsigned char* buf, size_t size);