Add method to replace ConnectJobs and sockets for a socket pool group.

This is needed as part of the socket pool GroupId refactor, so when
there's a change to the SSL-related configuration for a host (Like a
ClientCert), we can refresh just its socket pool, without failing any
requests.

Bug: 947644
Change-Id: I8fcd2c62bf127580c64edc29b6959ca1ab2d6e12
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1546142
Commit-Queue: Matt Menke <[email protected]>
Reviewed-by: David Benjamin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#651059}
12 files changed