Inform window manager about modal windows in mus+ash.

services/ui/ws/window_tree_client_unittest.cc

 // 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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 444 matching lines @@
                    const gfx::Rect& bounds) override {
     window_manager_client_->WmResponse(change_id, false);
   }
   void WmSetProperty(
       uint32_t change_id,
       uint32_t window_id,
       const std::string& name,
       const base::Optional<std::vector<uint8_t>>& value) override {
     window_manager_client_->WmResponse(change_id, false);
   }
+  void WmSetModalType(uint32_t window_id, ui::ModalType type) override {}
   void WmSetCanFocus(uint32_t window_id, bool can_focus) override {}
   void WmCreateTopLevelWindow(
       uint32_t change_id,
       ClientSpecificId requesting_client_id,
       const std::unordered_map<std::string, std::vector<uint8_t>>& properties)
       override {
     NOTIMPLEMENTED();
   }
   void WmClientJankinessChanged(ClientSpecificId client_id,
                                 bool janky) override {
@@ skipping 1759 matching lines @@
 
 // TODO(sky): make sure coverage of what was
 // WindowManagerTest.SecondEmbedRoot_InitService and
 // WindowManagerTest.MultipleEmbedRootsBeforeWTHReady gets added to window
 // manager
 // tests.
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui