Make WindowTree::SetModal() take the type.

services/ui/ws/server_window.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 "services/ui/ws/server_window.h"
 
 #include <inttypes.h>
 #include <stddef.h>
 
 #include "base/memory/ptr_util.h"
@@ skipping 12 matching lines @@
 
 ServerWindow::ServerWindow(ServerWindowDelegate* delegate,
                            const WindowId& id,
                            const Properties& properties)
     : delegate_(delegate),
       id_(id),
       frame_sink_id_(WindowIdToTransportId(id), 0),
       parent_(nullptr),
       stacking_target_(nullptr),
       transient_parent_(nullptr),
-      is_modal_(false),
+      modal_type_(MODAL_TYPE_NONE),
       visible_(false),
       // Default to POINTER as CURSOR_NULL doesn't change the cursor, it leaves
       // the last non-null cursor.
       cursor_id_(mojom::Cursor::POINTER),
       non_client_cursor_id_(mojom::Cursor::POINTER),
       opacity_(1),
       can_focus_(true),
       properties_(properties),
       // Don't notify newly added observers during notification. This causes
       // problems for code that adds an observer as part of an observer
@@ skipping 217 matching lines @@
   // If |child| and its former transient parent share the same parent, |child|
   // should be restacked properly so it is not among transient children of its
   // former parent, anymore.
   if (parent() == child->parent())
     RestackTransientDescendants(this, &GetStackingTarget, &ReorderImpl);
 
   for (auto& observer : observers_)
     observer.OnTransientWindowRemoved(this, child);
 }
 
-void ServerWindow::SetModal() {
-  is_modal_ = true;
+void ServerWindow::SetModal(ModalType modal_type) {
+  modal_type_ = modal_type;
 }
 
 bool ServerWindow::Contains(const ServerWindow* window) const {
   for (const ServerWindow* parent = window; parent; parent = parent->parent_) {
     if (parent == this)
       return true;
   }
   return false;
 }
 
@@ skipping 182 matching lines @@
   window->OnStackingChanged();
 }
 
 // static
 ServerWindow** ServerWindow::GetStackingTarget(ServerWindow* window) {
   return &window->stacking_target_;
 }
 
 }  // namespace ws
 }  // namespace ui