[Sync] Rename wifi_sync to sync_wifi.

components/wifi_sync/wifi_config_delegate.h

-// Copyright 2015 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.
-
-#ifndef COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_H_
-#define COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_H_
-
-namespace wifi_sync {
-
-class WifiCredential;
-
-// Interface for platform-specific delegates, which provide the ability
-// to configure local WiFi networks settings.
-class WifiConfigDelegate {
- public:
-  virtual ~WifiConfigDelegate() {}
-
-  // Adds a local network configuration entry for a WiFi network using
-  // the properties of |network_credential|. If the entry already
-  // exists, the entry's passphrase is updated.
-  virtual void AddToLocalNetworks(
-      const WifiCredential& network_credential) = 0;
-};
-
-}  // namespace wifi_sync
-
-#endif  // COMPONENTS_WIFI_SYNC_WIFI_CONFIG_DELEGATE_H_