Add SSLConfig object to IceServer.

This is a rollforward of https://webrtc-review.googlesource.com/c/src/+/96020,
with the addition of setting the old tlsCertPolicy, tlsAlpnProtocols and
tlsEllipticCurves in the RTCIceServer initializer, for backwards compatibility.

Bug: webrtc:9662
Change-Id: I28706ed4ff5abe3f7f913f105779f0e5412aeac5
Reviewed-on: https://webrtc-review.googlesource.com/98762
Commit-Queue: Diogo Real <diogor@google.com>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Qingsi Wang <qingsi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24696}
diff --git a/sdk/objc/unittests/RTCIceServerTest.mm b/sdk/objc/unittests/RTCIceServerTest.mm
index 8ef5195..7659196 100644
--- a/sdk/objc/unittests/RTCIceServerTest.mm
+++ b/sdk/objc/unittests/RTCIceServerTest.mm
@@ -89,7 +89,7 @@
   EXPECT_EQ("username", iceStruct.username);
   EXPECT_EQ("credential", iceStruct.password);
   EXPECT_EQ("hostname", iceStruct.hostname);
-  EXPECT_EQ(2u, iceStruct.tls_alpn_protocols.size());
+  EXPECT_EQ(2u, iceStruct.ssl_config.tls_alpn_protocols.value().size());
 }
 
 - (void)testTlsEllipticCurves {
@@ -106,8 +106,8 @@
   EXPECT_EQ("username", iceStruct.username);
   EXPECT_EQ("credential", iceStruct.password);
   EXPECT_EQ("hostname", iceStruct.hostname);
-  EXPECT_EQ(2u, iceStruct.tls_alpn_protocols.size());
-  EXPECT_EQ(2u, iceStruct.tls_elliptic_curves.size());
+  EXPECT_EQ(2u, iceStruct.ssl_config.tls_alpn_protocols.value().size());
+  EXPECT_EQ(2u, iceStruct.ssl_config.tls_elliptic_curves.value().size());
 }
 
 - (void)testInitFromNativeServer {
@@ -129,8 +129,8 @@
   EXPECT_EQ("username", [NSString stdStringForString:iceServer.username]);
   EXPECT_EQ("password", [NSString stdStringForString:iceServer.credential]);
   EXPECT_EQ("hostname", [NSString stdStringForString:iceServer.hostname]);
-  EXPECT_EQ(2u, iceServer.tlsAlpnProtocols.count);
-  EXPECT_EQ(2u, iceServer.tlsEllipticCurves.count);
+  EXPECT_EQ(2u, iceServer.sslConfig.tlsALPNProtocols.count);
+  EXPECT_EQ(2u, iceServer.sslConfig.tlsEllipticCurves.count);
 }
 
 @end