Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

chrome/browser/extensions/api/signed_in_devices/signed_in_devices_api.h

 // Copyright (c) 2013 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 CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_API_H__
 #define CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_API_H__
 
-#include <memory>
 #include <string>
 #include <vector>
 
 #include "chrome/browser/extensions/chrome_extension_function.h"
 
-class Profile;
+namespace sync_driver {
+class DeviceInfo;
+class DeviceInfoTracker;
+}  // namespace sync_driver
 
 namespace extensions {
 class ExtensionPrefs;
 }  // namespace extensions
 
-namespace syncer {
-class DeviceInfo;
-class DeviceInfoTracker;
-}  // namespace syncer
+class Profile;
 
 namespace extensions {
 
 // Gets the list of signed in devices. The returned scoped vector will be
 // filled with the list of devices associated with the account signed into this
 // |profile|. This function needs the |extension_id| because the
 // public device ids are set per extension.
-std::vector<std::unique_ptr<syncer::DeviceInfo>> GetAllSignedInDevices(
+std::vector<std::unique_ptr<sync_driver::DeviceInfo>> GetAllSignedInDevices(
     const std::string& extension_id,
     Profile* profile);
 
-std::vector<std::unique_ptr<syncer::DeviceInfo>> GetAllSignedInDevices(
+std::vector<std::unique_ptr<sync_driver::DeviceInfo>> GetAllSignedInDevices(
     const std::string& extension_id,
-    syncer::DeviceInfoTracker* device_tracker,
+    sync_driver::DeviceInfoTracker* device_tracker,
     ExtensionPrefs* extension_prefs);
 
 class SignedInDevicesGetFunction : public ChromeSyncExtensionFunction {
  protected:
   ~SignedInDevicesGetFunction() override {}
 
   // ExtensionFunction:
   bool RunSync() override;
   DECLARE_EXTENSION_FUNCTION("signedInDevices.get", SIGNED_IN_DEVICES_GET)
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_SIGNED_IN_DEVICES_SIGNED_IN_DEVICES_API_H__