AppendPrefix       22 net/spdy/hpack_output_stream.cc   AppendPrefix(kIndexedOpcode);
AppendPrefix       28 net/spdy/hpack_output_stream.cc   AppendPrefix(kLiteralNoIndexOpcode);
AppendPrefix       92 net/spdy/hpack_output_stream.cc   AppendPrefix(kStringLiteralIdentityEncoded);
AppendPrefix       67 net/spdy/hpack_output_stream.h   void AppendPrefix(HpackPrefix prefix);