Fixes bug in handling window deletion originating from server

ui/aura/mus/window_tree_client_unittest.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 "ui/aura/mus/window_tree_client.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 1209 matching lines @@
   ASSERT_FALSE(window_tree()->has_change());
   ASSERT_EQ(1u, root_window()->children().size());
   Window* server_window = root_window()->children()[0];
   EXPECT_EQ(window1->parent(), server_window);
   EXPECT_EQ(window2->parent(), server_window);
   ASSERT_EQ(2u, server_window->children().size());
   EXPECT_EQ(window1, server_window->children()[0]);
   EXPECT_EQ(window2, server_window->children()[1]);
 }
 
+// Ensures when WindowTreeClient::OnWindowDeleted() is called nothing is
+// scheduled on the server side.
+TEST_F(WindowTreeClientClientTest, OnWindowDeletedDoesntNotifyServer) {
+  Window window1(nullptr);
+  window1.Init(ui::LAYER_NOT_DRAWN);
+  Window* window2 = new Window(nullptr);
+  window2->Init(ui::LAYER_NOT_DRAWN);
+  window1.AddChild(window2);
+  window_tree()->AckAllChanges();
+  window_tree_client()->OnWindowDeleted(server_id(window2));
+  EXPECT_FALSE(window_tree()->has_change());
+}
+
 }  // namespace aura