Use display::DisplayMode in ozone/drm/gpu

ui/ozone/platform/drm/gpu/proxy_helpers_unittest.cc

 // Copyright 2017 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/ozone/platform/drm/gpu/proxy_helpers.h"
+
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_checker_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ui {
 
 class ProxyHelpersTest : public testing::Test {
  public:
@@ skipping 134 matching lines @@
       base::Bind(&ProxyHelpersTest::QuitFunction, base::Unretained(this), 42));
 
   run_loop_.Run();
 
   EXPECT_EQ(value_type_, 102);
   EXPECT_EQ(*move_type_, 102);
   EXPECT_TRUE(original_string_ == "This is a string");
   EXPECT_TRUE(derived_string_ == "This is a stringer");
 }
 }  // namespace ui