1 files changed, 0 insertions, 27 deletions
diff --git a/chromium/components/mus/public/cpp/window_tree_client_observer.h b/chromium/components/mus/public/cpp/window_tree_client_observer.h
deleted file mode 100644
index 394a5cea1e1..00000000000
--- a/chromium/components/mus/public/cpp/window_tree_client_observer.h
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_
-#define COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_
-
-namespace mus {
-
-class Window;
-class WindowTreeClient;
-
-class WindowTreeClientObserver {
- public:
-  virtual void OnWindowTreeFocusChanged(Window* gained_focus,
-                                        Window* lost_focus) {}
-
-  // Called right before the client is destroyed.
-  virtual void OnWillDestroyClient(WindowTreeClient* client) {}
-
- protected:
-  virtual ~WindowTreeClientObserver() {}
-};
-
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_