Refactor NotificationPlatformBridgeLinux

chrome/browser/notifications/notification_platform_bridge.h

Index: chrome/browser/notifications/notification_platform_bridge.h
diff --git a/chrome/browser/notifications/notification_platform_bridge.h b/chrome/browser/notifications/notification_platform_bridge.h
index 0c93da80bbf12af2a74c1946e4d44c66b2cd9cce..f90265e68b320f40673a4d87ae548e810c0c55c0 100644
--- a/chrome/browser/notifications/notification_platform_bridge.h
+++ b/chrome/browser/notifications/notification_platform_bridge.h
@@ -22,6 +22,9 @@ class Notification;
 // TODO(miguelg): Add support for click and close events.
 class NotificationPlatformBridge {
  public:
+  using NotificationBridgeReadyCallback =
+      base::OnceCallback<void(bool /* success */)>;
+
   static NotificationPlatformBridge* Create();
 
   virtual ~NotificationPlatformBridge() {}
@@ -45,6 +48,11 @@ class NotificationPlatformBridge {
       bool incognito,
       const GetDisplayedNotificationsCallback& callback) const = 0;
 
+  // Calls |callback| once |this| is initialized. The argument is
+  // true if |this| is ready to be used and false if initialization
+  // failed. |callback| may be called directly or from a posted task.
+  virtual void SetReadyCallback(NotificationBridgeReadyCallback callback) = 0;
+
  protected:
   NotificationPlatformBridge() {}