ash: SessionControllerClient observes user image change

chrome/browser/ui/ash/session_controller_client.h

Index: chrome/browser/ui/ash/session_controller_client.h
diff --git a/chrome/browser/ui/ash/session_controller_client.h b/chrome/browser/ui/ash/session_controller_client.h
index 9a19dcc72d20fe6d46f0e2d89b8daa9e06830d50..a5dff9c8a6543c584ee65a0ea1df3a2119d448a7 100644
--- a/chrome/browser/ui/ash/session_controller_client.h
+++ b/chrome/browser/ui/ash/session_controller_client.h
@@ -25,6 +25,7 @@ class User;
 class SessionControllerClient
     : public ash::mojom::SessionControllerClient,
       public user_manager::UserManager::UserSessionStateObserver,
+      public user_manager::UserManager::Observer,
       public session_manager::SessionManagerObserver {
  public:
   SessionControllerClient();
@@ -39,6 +40,9 @@ class SessionControllerClient
   void ActiveUserChanged(const user_manager::User* active_user) override;
   void UserAddedToSession(const user_manager::User* added_user) override;
 
+  // user_manager::UserManager::Observer
+  void OnUserImageChanged(const user_manager::User& user) override;
+
   // session_manager::SessionManagerObserver:
   void OnSessionStateChanged() override;