Fix 'auto variable type must not deduce to a raw pointer type' errors in Ozone/Wayland code

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"
@@ skipping 76 matching lines @@
 ACTION_P(CloneEvent, ptr) {
   *ptr = Event::Clone(*arg0);
 }
 
 TEST_F(WaylandWindowTest, DispatchEvent) {
   std::unique_ptr<Event> event;
   EXPECT_CALL(delegate, DispatchEvent(_)).WillOnce(CloneEvent(&event));
   window.DispatchEvent(&test_mouse_event);
   ASSERT_TRUE(event);
   ASSERT_TRUE(event->IsMouseEvent());
-  auto mouse_event = event->AsMouseEvent();
+  auto* mouse_event = event->AsMouseEvent();
   EXPECT_EQ(mouse_event->location_f(), test_mouse_event.location_f());
   EXPECT_EQ(mouse_event->root_location_f(), test_mouse_event.root_location_f());
   EXPECT_EQ(mouse_event->time_stamp(), test_mouse_event.time_stamp());
   EXPECT_EQ(mouse_event->button_flags(), test_mouse_event.button_flags());
   EXPECT_EQ(mouse_event->changed_button_flags(),
             test_mouse_event.changed_button_flags());
 }
 
 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(Eq(gfx::Rect(0, 0, 1500, 1000))));
   EXPECT_CALL(*xdg_surface, AckConfigure(13));
 }
 
 }  // namespace ui