ui: No need to typedef testing::Test in unittests.

ui/gfx/screen_unittest.cc

 // Copyright (c) 2012 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/gfx/screen.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
-typedef testing::Test ScreenTest;
-
-TEST_F(ScreenTest, GetPrimaryDisplaySize) {
+TEST(ScreenTest, GetPrimaryDisplaySize) {
   // We aren't actually testing that it's correct, just that it's sane.
   const gfx::Size size = gfx::Screen::GetPrimaryDisplay().size();
   EXPECT_GE(size.width(), 1);
   EXPECT_GE(size.height(), 1);
 }
 
-TEST_F(ScreenTest, GetNumDisplays) {
+TEST(ScreenTest, GetNumDisplays) {
   // We aren't actually testing that it's correct, just that it's sane.
   EXPECT_GE(gfx::Screen::GetNumDisplays(), 1);
 }
 
 }  // namespace