[net/http auth] Use strings to identify authentication schemes.

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 48d667025b5cf6ef8efd9cd860f3a2f586455b3d..b15470e8888dd81365d8ac28bb5f532fd9ef6241 100644
--- a/net/socket/ssl_client_socket_pool_unittest.cc
+++ b/net/socket/ssl_client_socket_pool_unittest.cc
@@ -151,12 +151,9 @@ class SSLClientSocketPoolTest
   void AddAuthToCache() {
     const base::string16 kFoo(base::ASCIIToUTF16("foo"));
     const base::string16 kBar(base::ASCIIToUTF16("bar"));
-    session_->http_auth_cache()->Add(GURL("http://proxy:443/"),
-                                     "MyRealm1",
-                                     HttpAuth::AUTH_SCHEME_BASIC,
-                                     "Basic realm=MyRealm1",
-                                     AuthCredentials(kFoo, kBar),
-                                     "/");
+    session_->http_auth_cache()->Add(GURL("http://proxy:443/"), "MyRealm1",
+                                     "basic", "Basic realm=MyRealm1",
+                                     AuthCredentials(kFoo, kBar), "/");
   }
 
   HttpNetworkSession* CreateNetworkSession() {