Export primary insecure and secure QUIC config id via internal server

net/quic/crypto/quic_crypto_server_config.cc

Index: net/quic/crypto/quic_crypto_server_config.cc
diff --git a/net/quic/crypto/quic_crypto_server_config.cc b/net/quic/crypto/quic_crypto_server_config.cc
index 85de457d37eafa8a9dc31aa70b1f37fc510c1874..e2b0583e052d2d586cfe23dea23b8839ed628605 100644
--- a/net/quic/crypto/quic_crypto_server_config.cc
+++ b/net/quic/crypto/quic_crypto_server_config.cc
@@ -147,6 +147,11 @@ class VerifyNonceIsValidAndUniqueCallback
 // static
 const char QuicCryptoServerConfig::TESTING[] = "secret string for testing";
 
+PrimaryConfigChangedCallback::PrimaryConfigChangedCallback() {
+}
+
+PrimaryConfigChangedCallback::~PrimaryConfigChangedCallback() {
+}
 
 ValidateClientHelloResultCallback::ValidateClientHelloResultCallback() {
 }
@@ -792,6 +797,9 @@ void QuicCryptoServerConfig::SelectNewPrimaryConfig(
              << base::HexEncode(
                  reinterpret_cast<const char*>(primary_config_->orbit),
                  kOrbitSize);
+    if (primary_config_changed_cb_.get() != NULL) {
+      primary_config_changed_cb_->Run(primary_config_->id);
+    }
 
     return;
   }
@@ -809,6 +817,9 @@ void QuicCryptoServerConfig::SelectNewPrimaryConfig(
                reinterpret_cast<const char*>(primary_config_->orbit),
                kOrbitSize);
   next_config_promotion_time_ = QuicWallTime::Zero();
+  if (primary_config_changed_cb_.get() != NULL) {
+    primary_config_changed_cb_->Run(primary_config_->id);
+  }
 }
 
 void QuicCryptoServerConfig::EvaluateClientHello(
@@ -1192,6 +1203,12 @@ void QuicCryptoServerConfig::set_server_nonce_strike_register_window_secs(
   server_nonce_strike_register_window_secs_ = window_secs;
 }
 
+void QuicCryptoServerConfig::AcquirePrimaryConfigChangedCb(
+    PrimaryConfigChangedCallback* cb) {
+  base::AutoLock locked(configs_lock_);
+  primary_config_changed_cb_.reset(cb);
+}
+
 string QuicCryptoServerConfig::NewSourceAddressToken(
     const IPEndPoint& ip,
     QuicRandom* rand,