Disable flakey test

mash/wm/window_manager_apptest.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 "base/bind.h"
 #include "components/mus/public/cpp/window.h"
 #include "components/mus/public/cpp/window_tree_connection.h"
 #include "components/mus/public/cpp/window_tree_delegate.h"
 #include "components/mus/public/interfaces/window_manager.mojom.h"
 #include "components/mus/public/interfaces/window_tree.mojom.h"
@@ skipping 28 matching lines @@
   }
 
  private:
   // mus::WindowTreeDelegate:
   void OnEmbed(mus::Window* root) override {}
   void OnConnectionLost(mus::WindowTreeConnection* connection) override {}
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerAppTest);
 };
 
-TEST_F(WindowManagerAppTest, OpenWindow) {
+// TODO(sky): flakey, http://crbug.com/559412 .
+TEST_F(WindowManagerAppTest, DISABLED_OpenWindow) {
   mus::mojom::WindowManagerPtr connection;
   ConnectToWindowManager(&connection);
 
   ASSERT_TRUE(OpenWindow(connection.get()));
 }
 
 }  // namespace wm
 }  // namespace mash