GitLab

Hit ERR_READ_IF_READY_NOT_IMPLEMENTED in SocketDataPump::ReceiveMore()
when switching the Cast HTTP server to network::server::HttpServer. Add
the implementation to unblock the migration.

Bug: b/118771830
Merge-With: eureka-internal/342047
Test: CQ & manual
Change-Id: I44666fa5b7f741d757c4382798b69f461a1e7fad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2018597
Commit-Queue: Junbo Ke <juke@chromium.org>
Reviewed-by: David Benjamin <davidben@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735731}