remove GICE-specific stun error code

GICE was removed around M42

BUG=webrtc:4299

Change-Id: I4e83a888c3ecc1681799c07b47b75c9f31b40baa
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227348
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34680}

api/transport/stun.cc

diff --git a/api/transport/stun.cc b/api/transport/stun.cc
index 1b5bf0c..0f86267 100644
--- a/api/transport/stun.cc
+++ b/api/transport/stun.cc
@@ -94,7 +94,6 @@
 const char STUN_ERROR_REASON_UNAUTHORIZED[] = "Unauthorized";
 const char STUN_ERROR_REASON_UNKNOWN_ATTRIBUTE[] = "Unknown Attribute";
 const char STUN_ERROR_REASON_FORBIDDEN[] = "Forbidden";
-const char STUN_ERROR_REASON_STALE_CREDENTIALS[] = "Stale Credentials";
 const char STUN_ERROR_REASON_ALLOCATION_MISMATCH[] = "Allocation Mismatch";
 const char STUN_ERROR_REASON_STALE_NONCE[] = "Stale Nonce";
 const char STUN_ERROR_REASON_WRONG_CREDENTIALS[] = "Wrong Credentials";

api/transport/stun.h

diff --git a/api/transport/stun.h b/api/transport/stun.h
index 32a8a43..b5f9ce1 100644
--- a/api/transport/stun.h
+++ b/api/transport/stun.h
@@ -95,7 +95,6 @@
   STUN_ERROR_BAD_REQUEST = 400,
   STUN_ERROR_UNAUTHORIZED = 401,
   STUN_ERROR_UNKNOWN_ATTRIBUTE = 420,
-  STUN_ERROR_STALE_CREDENTIALS = 430,  // GICE only
   STUN_ERROR_STALE_NONCE = 438,
   STUN_ERROR_SERVER_ERROR = 500,
   STUN_ERROR_GLOBAL_FAILURE = 600
@@ -106,7 +105,6 @@
 extern const char STUN_ERROR_REASON_BAD_REQUEST[];
 extern const char STUN_ERROR_REASON_UNAUTHORIZED[];
 extern const char STUN_ERROR_REASON_UNKNOWN_ATTRIBUTE[];
-extern const char STUN_ERROR_REASON_STALE_CREDENTIALS[];
 extern const char STUN_ERROR_REASON_STALE_NONCE[];
 extern const char STUN_ERROR_REASON_SERVER_ERROR[];
 

p2p/base/connection.cc

diff --git a/p2p/base/connection.cc b/p2p/base/connection.cc
index 0ee9a6a..ebfe6fd 100644
--- a/p2p/base/connection.cc
+++ b/p2p/base/connection.cc
@@ -1138,8 +1138,6 @@
       error_code == STUN_ERROR_SERVER_ERROR ||
       error_code == STUN_ERROR_UNAUTHORIZED) {
     // Recoverable error, retry
-  } else if (error_code == STUN_ERROR_STALE_CREDENTIALS) {
-    // Race failure, retry
   } else if (error_code == STUN_ERROR_ROLE_CONFLICT) {
     HandleRoleConflictFromPeer();
   } else if (request->msg()->type() == GOOG_PING_REQUEST) {