[Sync] Rename wifi_sync to sync_wifi.

components/sync_wifi/wifi_security_class_chromeos_unittest.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 "components/wifi_sync/wifi_security_class.h"
+#include "components/sync_wifi/wifi_security_class.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
-namespace wifi_sync {
+namespace sync_wifi {
 
 TEST(WifiSecurityClassTest, FromShillSecurityToEnum) {
   EXPECT_EQ(SECURITY_CLASS_NONE,
             WifiSecurityClassFromShillSecurity(shill::kSecurityNone));
   EXPECT_EQ(SECURITY_CLASS_WEP,
             WifiSecurityClassFromShillSecurity(shill::kSecurityWep));
   EXPECT_EQ(SECURITY_CLASS_PSK,
             WifiSecurityClassFromShillSecurity(shill::kSecurityPsk));
   EXPECT_EQ(SECURITY_CLASS_802_1X,
             WifiSecurityClassFromShillSecurity(shill::kSecurity8021x));
   EXPECT_EQ(SECURITY_CLASS_INVALID,
             WifiSecurityClassFromShillSecurity("bogus-security-class"));
 }
 
-}  // namespace wifi_sync
+}  // namespace sync_wifi