Revert of Rename PrivateMode enum values:

net/quic/quic_session_key_test.cc

Index: net/quic/quic_session_key_test.cc
diff --git a/net/quic/quic_session_key_test.cc b/net/quic/quic_session_key_test.cc
index db030977dcde19ff29009ed3d05f2aa6fb9b501e..e8fd4fd57ae348d310b758bbfaae3ffbbedf5219 100644
--- a/net/quic/quic_session_key_test.cc
+++ b/net/quic/quic_session_key_test.cc
@@ -16,22 +16,22 @@
   HostPortPair google_host_port_pair("google.com", 10);
 
   QuicSessionKey google_http_key(google_host_port_pair, false,
-                                 PRIVACY_MODE_DISABLED);
+                                 kPrivacyModeDisabled);
   string google_http_key_str = google_http_key.ToString();
   EXPECT_EQ("http://google.com:10", google_http_key_str);
 
   QuicSessionKey google_https_key(google_host_port_pair, true,
-                                 PRIVACY_MODE_DISABLED);
+                                 kPrivacyModeDisabled);
   string google_https_key_str = google_https_key.ToString();
   EXPECT_EQ("https://google.com:10", google_https_key_str);
 
   QuicSessionKey private_http_key(google_host_port_pair, false,
-                                  PRIVACY_MODE_ENABLED);
+                                  kPrivacyModeEnabled);
   string private_http_key_str = private_http_key.ToString();
   EXPECT_EQ("http://google.com:10/private", private_http_key_str);
 
   QuicSessionKey private_https_key(google_host_port_pair, true,
-                                   PRIVACY_MODE_ENABLED);
+                                   kPrivacyModeEnabled);
   string private_https_key_str = private_https_key.ToString();
   EXPECT_EQ("https://google.com:10/private", private_https_key_str);
 }