[Sync] Fix namespaces for the browser_sync component.

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

 // 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.
 
 #include "chrome/browser/extensions/api/signed_in_devices/signed_in_devices_api.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/values.h"
@@ skipping 81 matching lines @@
     return std::vector<std::unique_ptr<DeviceInfo>>();
   }
 
   ExtensionPrefs* extension_prefs = ExtensionPrefs::Get(profile);
 
   return GetAllSignedInDevices(extension_id, device_tracker, extension_prefs);
 }
 
 std::unique_ptr<DeviceInfo> GetLocalDeviceInfo(const std::string& extension_id,
                                                Profile* profile) {
-  ProfileSyncService* pss = ProfileSyncServiceFactory::GetForProfile(profile);
+  browser_sync::ProfileSyncService* pss =
+      ProfileSyncServiceFactory::GetForProfile(profile);
   if (!pss) {
     return std::unique_ptr<DeviceInfo>();
   }
 
   LocalDeviceInfoProvider* local_device = pss->GetLocalDeviceInfoProvider();
   DCHECK(local_device);
   std::string guid = local_device->GetLocalSyncCacheGUID();
   std::unique_ptr<DeviceInfo> device =
       GetDeviceInfoForClientId(guid, extension_id, profile);
   return device;
@@ skipping 24 matching lines @@
 
   for (const std::unique_ptr<DeviceInfo>& device : devices)
     result->Append(device->ToValue());
 
   SetResult(std::move(result));
   return true;
 }
 
 }  // namespace extensions