Reland "ice server parsing: return RTCError with more details"

This is a reland of commit c4b0bde7f2daabc4e0667fb73d096d1cf0819226
which changes the name of the new method and adds a deprecated
backward compatible variant with the old name.

Original change's description:
> ice server parsing: return RTCError with more details
>
> surfacing those errors to the API (without specific details) instead of just the logging.
>
> BUG=webrtc:14539
>
> Change-Id: Id907ebeb08b96b0e4225a016a37a12d58889091b
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/278340
> Reviewed-by: Henrik Boström <hbos@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Commit-Queue: Philipp Hancke <phancke@microsoft.com>
> Cr-Commit-Position: refs/heads/main@{#38356}

Bug: webrtc:14539
Change-Id: I0a5482e123f25867582d62101b31ed207b95ea1a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/278962
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#38364}
diff --git a/pc/ice_server_parsing_unittest.cc b/pc/ice_server_parsing_unittest.cc
index 1cb3686..408c790 100644
--- a/pc/ice_server_parsing_unittest.cc
+++ b/pc/ice_server_parsing_unittest.cc
@@ -62,8 +62,9 @@
     server.tls_cert_policy = tls_certificate_policy;
     server.hostname = hostname;
     servers.push_back(server);
-    return webrtc::ParseIceServers(servers, &stun_servers_, &turn_servers_) ==
-           webrtc::RTCErrorType::NONE;
+    return webrtc::ParseIceServersOrError(servers, &stun_servers_,
+                                          &turn_servers_)
+        .ok();
   }
 
  protected:
@@ -229,8 +230,9 @@
   server.username = "foo";
   server.password = "bar";
   servers.push_back(server);
-  EXPECT_EQ(webrtc::RTCErrorType::NONE,
-            webrtc::ParseIceServers(servers, &stun_servers_, &turn_servers_));
+  EXPECT_TRUE(
+      webrtc::ParseIceServersOrError(servers, &stun_servers_, &turn_servers_)
+          .ok());
   EXPECT_EQ(1U, stun_servers_.size());
   EXPECT_EQ(1U, turn_servers_.size());
 }
@@ -245,8 +247,10 @@
   server.username = "foo";
   server.password = "bar";
   servers.push_back(server);
-  EXPECT_EQ(webrtc::RTCErrorType::NONE,
-            webrtc::ParseIceServers(servers, &stun_servers_, &turn_servers_));
+
+  EXPECT_TRUE(
+      webrtc::ParseIceServersOrError(servers, &stun_servers_, &turn_servers_)
+          .ok());
   EXPECT_EQ(2U, turn_servers_.size());
   EXPECT_NE(turn_servers_[0].priority, turn_servers_[1].priority);
 }