Revert of Rename PrivateMode enum values:

net/quic/quic_session_key_test.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_session_key.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 using std::string;
 
 namespace net {
 
 namespace {
 
 TEST(QuicSessionKeyTest, ToString) {
   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);
 }
 
 }  // namespace
 
 }  // namespace net