Use AuthCredentials throughout the network stack instead of username/password.

net/socket/ssl_client_socket_pool_unittest.cc

Index: net/socket/ssl_client_socket_pool_unittest.cc
diff --git a/net/socket/ssl_client_socket_pool_unittest.cc b/net/socket/ssl_client_socket_pool_unittest.cc
index ce2ca40d4fdc3b9c6003857d3975074641b83afa..4e00d83ab7ab603fe475ed15f34a1c4c17fea4ea 100644
--- a/net/socket/ssl_client_socket_pool_unittest.cc
+++ b/net/socket/ssl_client_socket_pool_unittest.cc
@@ -128,8 +128,7 @@ class SSLClientSocketPoolTest : public testing::Test {
                                      "MyRealm1",
                                      HttpAuth::AUTH_SCHEME_BASIC,
                                      "Basic realm=MyRealm1",
-                                     kFoo,
-                                     kBar,
+                                     AuthCredentials(kFoo, kBar),
                                      "/");
   }