ozone/platform/wayland: Use more realistic event processing and request flushing in tests

ui/ozone/platform/wayland/wayland_window_unittest.cc

 // Copyright 2016 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 <wayland-server-core.h>
 #include <xdg-shell-unstable-v5-server-protocol.h>
 
+#include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/ozone/platform/wayland/fake_server.h"
 #include "ui/ozone/platform/wayland/mock_platform_window_delegate.h"
 #include "ui/ozone/platform/wayland/wayland_test.h"
 #include "ui/ozone/platform/wayland/wayland_window.h"
 
 using ::testing::Eq;
 using ::testing::Mock;
@@ skipping 42 matching lines @@
 }
 
 TEST_F(WaylandWindowTest, ConfigureEvent) {
   wl_array states;
   wl_array_init(&states);
   xdg_surface_send_configure(xdg_surface->resource(), 1000, 1000, &states, 12);
   xdg_surface_send_configure(xdg_surface->resource(), 1500, 1000, &states, 13);
 
   // Make sure that the implementation does not call OnBoundsChanged for each
   // configure event if it receives multiple in a row.
-  EXPECT_CALL(delegate, OnBoundsChanged(_)).Times(0);
-  Sync();
-  Mock::VerifyAndClearExpectations(&delegate);
-
   EXPECT_CALL(delegate, OnBoundsChanged(Eq(gfx::Rect(0, 0, 1500, 1000))));
   EXPECT_CALL(*xdg_surface, AckConfigure(13));
-  window.ApplyPendingBounds();
 }
 
 }  // namespace ui