Renames some WindowManager classes

components/mus/ws/forwarding_window_manager.cc

 // 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.
 
 #include "components/mus/ws/forwarding_window_manager.h"
 
 #include "components/mus/ws/connection_manager.h"
 #include "components/mus/ws/window_tree_host_impl.h"
 
 namespace mus {
 namespace ws {
 
 ForwardingWindowManager::ForwardingWindowManager(
     ConnectionManager* connection_manager)
     : connection_manager_(connection_manager) {}
 
 ForwardingWindowManager::~ForwardingWindowManager() {}
 
-mojom::WindowManager* ForwardingWindowManager::GetActiveWindowManager() {
+mojom::WindowManagerDeprecated*
+ForwardingWindowManager::GetActiveWindowManager() {
   // TODO(sky): This needs to detect active window, or OpenWindow() needs to
   // take the display.
   return connection_manager_->GetActiveWindowTreeHost()->window_manager();
 }
 
 void ForwardingWindowManager::OpenWindow(
     mus::mojom::WindowTreeClientPtr client,
     mojo::Map<mojo::String, mojo::Array<uint8_t>> properties) {
   GetActiveWindowManager()->OpenWindow(std::move(client),
                                        std::move(properties));
 }
 
 }  // namespace ws
 }  // namespace mus