[BackgroundSync] Trigger Background Sync events when Chrome is backgrounded on Android

content/browser/background_sync/background_sync_network_observer.h

Index: content/browser/background_sync/background_sync_network_observer.h
diff --git a/content/browser/background_sync/background_sync_network_observer.h b/content/browser/background_sync/background_sync_network_observer.h
index 7c81f738a92c01b799441e14a3366d71d4741f28..e2eb48a3bcdf28cdbce12c46e0e05637279caf63 100644
--- a/content/browser/background_sync/background_sync_network_observer.h
+++ b/content/browser/background_sync/background_sync_network_observer.h
@@ -13,7 +13,7 @@
 namespace content {
 
 class CONTENT_EXPORT BackgroundSyncNetworkObserver
-    : net::NetworkChangeNotifier::NetworkChangeObserver {
+    : public net::NetworkChangeNotifier::NetworkChangeObserver {
  public:
   // Creates a BackgroundSyncNetworkObserver. |network_changed_callback| is
   // called when the network connection changes asynchronously via PostMessage.
@@ -25,13 +25,13 @@ class CONTENT_EXPORT BackgroundSyncNetworkObserver
   // |network_state|.
   bool NetworkSufficient(SyncNetworkState network_state);
 
- private:
-  void NotifyNetworkChanged();
-
   // NetworkChangeObserver overrides
   void OnNetworkChanged(
       net::NetworkChangeNotifier::ConnectionType connection_type) override;
 
+ private:
+  void NotifyNetworkChanged();
+
   net::NetworkChangeNotifier::ConnectionType connection_type_;
 
   // The callback to run when the network changes.