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 c2d22c9061109c328e33e528dc366ddce603aae9..480e4335570b5e762d658e40bfcee6626663d12f 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;