Renames window_manager.mojom to window_manager2.mojom

mojo/services/public/interfaces/window_manager/window_manager.mojom

-// Copyright 2014 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 mojo {
-
-[Client=WindowManagerClient]
-interface WindowManagerService {
-  SetCapture(uint32 view_id) => (bool success);
-  FocusWindow(uint32 view_id) => (bool success);
-  ActivateWindow(uint32 view_id) => (bool success);
-};
-
-[Client=WindowManagerService]
-interface WindowManagerClient {
-  // Called when the window manager is ready to use (in the event a client
-  // connects to it before it has been initialized).
-  OnWindowManagerReady();
-
-  // TODO(beng): how is the WM supposed to know if a view is known to a client
-  //             or not?
-  OnCaptureChanged(uint32 old_capture_view_id, uint32 new_capture_view_id);
-
-  OnFocusChanged(uint32 old_focused_node_id, uint32 new_focused_node_id);
-  OnActiveWindowChanged(uint32 old_focused_window, uint32 new_focused_window);
-};
-
-}