Remove window_manager.mojom.

components/arc/common/window_manager.mojom

Index: components/arc/common/window_manager.mojom
diff --git a/components/arc/common/window_manager.mojom b/components/arc/common/window_manager.mojom
deleted file mode 100644
index c456b1ae016a6cad16fdb583aa022c9e8bbc7900..0000000000000000000000000000000000000000
--- a/components/arc/common/window_manager.mojom
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2016 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.
-
-module arc.mojom;
-
-[Extensible]
-enum WindowManagerMode {
-  MODE_NORMAL = 0,
-  MODE_TOUCH_VIEW = 1
-};
-
-interface WindowManagerInstance {
-  // Informs of the currently used window mode.
-  OnWindowManagerModeChange@0(WindowManagerMode mode);
-};