M68 merge: Temporarily remove enable-websocket-auth-connection-reuse from about:flags

The M68 branch has a non-working implementation of the
enable-websocket-auth-connection-reuse flag. In order to avoid the
confusion of having a flag that works in some versions and not in
others, temporarily remove the flag from about:flags.

Once the flag has been disabled in the M68 branch it will be re-enabled
for M69 by reverting this CL.

BUG=423609

TBR=yhirano@chromium.org

Change-Id: Id17ac18e13effcfd5bd946dc1fe0f1c70df96539
Reviewed-on: https://chromium-review.googlesource.com/1090700
Commit-Queue: Adam Rice <ricea@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#566730}(cherry picked from commit 7e3874d48e23ea0ef6f1464763cfb08b48ce86d4)
Reviewed-on: https://chromium-review.googlesource.com/1101117
Reviewed-by: Adam Rice <ricea@chromium.org>
Cr-Commit-Position: refs/branch-heads/3440@{#360}
Cr-Branched-From: 010ddcfda246975d194964ccf20038ebbdec6084-refs/heads/master@{#561733}
3 files changed