Wi-Fi Sync: Fix the destruction order for the service.

The order of destruction for members of WifiConfigurationSyncService
was incorrect, possibly causing a crash on shutdown.

Bug: 1145366
Change-Id: I227c805c3eba2d7aed21114de7a3318f0e7decd4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2641475Reviewed-by: Azeem Arshad <azeemarshad@chromium.org>
Commit-Queue: Jon Mann <jonmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845717}

chromeos/components/sync_wifi/wifi_configuration_sync_service.h

@@ -48,13 +48,13 @@ class WifiConfigurationSyncService : public KeyedService {
       base::WeakPtr<NetworkMetadataStore> network_metadata_store);
 
  private:
-  std::unique_ptr<WifiConfigurationBridge> bridge_;
-  std::unique_ptr<SyncedNetworkUpdaterImpl> updater_;
-  std::unique_ptr<LocalNetworkCollectorImpl> collector_;
-  std::unique_ptr<SyncedNetworkMetricsLogger> metrics_logger_;
-  std::unique_ptr<TimerFactory> timer_factory_;
   mojo::Remote<chromeos::network_config::mojom::CrosNetworkConfig>
       remote_cros_network_config_;
+  std::unique_ptr<SyncedNetworkMetricsLogger> metrics_logger_;
+  std::unique_ptr<TimerFactory> timer_factory_;
+  std::unique_ptr<SyncedNetworkUpdaterImpl> updater_;
+  std::unique_ptr<LocalNetworkCollectorImpl> collector_;
+  std::unique_ptr<WifiConfigurationBridge> bridge_;
 
   DISALLOW_COPY_AND_ASSIGN(WifiConfigurationSyncService);
 };