Enable BoringSSL handshake config shedding.

Trim a bit of memory use where we can.

Bug: none
Change-Id: I632d712e869f59f27ac0522d0bf33dc32b9a91f2
Reviewed-on: https://chromium-review.googlesource.com/1045225
Commit-Queue: Steven Valdez <svaldez@chromium.org>
Reviewed-by: Steven Valdez <svaldez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556452}

net/socket/ssl_client_socket_impl.cc

@@ -966,6 +966,7 @@ int SSLClientSocketImpl::Init() {
   // optimization. See https://crbug.com/boringssl/123.
   SSL_set_renegotiate_mode(ssl_.get(), ssl_renegotiate_freely);
 
+  SSL_set_shed_handshake_config(ssl_.get(), 1);
   return OK;
 }
 

net/socket/ssl_server_socket_impl.cc

@@ -216,6 +216,7 @@ SSLServerContextImpl::SocketImpl::SocketImpl(
       weak_factory_(this) {
   ssl_.reset(SSL_new(context_->ssl_ctx_.get()));
   SSL_set_app_data(ssl_.get(), this);
+  SSL_set_shed_handshake_config(ssl_.get(), 1);
 }
 
 SSLServerContextImpl::SocketImpl::~SocketImpl() {