SniffMimeType     804 chrome/browser/extensions/api/media_galleries/media_galleries_api.cc void MediaGalleriesGetMetadataFunction::SniffMimeType(
SniffMimeType     869 net/base/mime_sniffer.cc bool SniffMimeType(const char* content,
SniffMimeType      35 net/base/mime_sniffer_unittest.cc static std::string SniffMimeType(const std::string& content,