Use quiche string libraries in third_party/quic/core (part 2)
Use quiche string libraries in third_party/quic/core (part 2)

Looks like some more occurrences of the Quic libraries cropped up
between cl/285401547 and now.

gfe-relnote: n/a, no functional change
PiperOrigin-RevId: 285408322
Change-Id: I4ee4a869d5027c2568a299e56fec4a54eec1dfca

google/quiche,google/quiche,google/quiche,google/quiche