READ_META        1239 net/http/http_cache_transaction.cc     DCHECK(mode_ & READ_META);
READ_META          55 net/http/http_cache_transaction.h     READ            = READ_META | READ_DATA,
READ_META          58 net/http/http_cache_transaction.h     UPDATE          = READ_META | WRITE,  // READ_WRITE & ~READ_DATA