Move Screen, its impls, DisplayObserver and DisplayChangeNotifier to ui/display

ui/gfx/screen_unittest.cc

Index: ui/gfx/screen_unittest.cc
diff --git a/ui/gfx/screen_unittest.cc b/ui/gfx/screen_unittest.cc
deleted file mode 100644
index 8b63ac70b52a3a493ffb110f0fee463a95ca4560..0000000000000000000000000000000000000000
--- a/ui/gfx/screen_unittest.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// 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 {
-
-TEST(ScreenTest, GetPrimaryDisplaySize) {
-  // We aren't actually testing that it's correct, just that it's sane.
-  const gfx::Size size = gfx::Screen::GetScreen()->GetPrimaryDisplay().size();
-  EXPECT_GE(size.width(), 1);
-  EXPECT_GE(size.height(), 1);
-}
-
-TEST(ScreenTest, GetNumDisplays) {
-  // We aren't actually testing that it's correct, just that it's sane.
-  EXPECT_GE(gfx::Screen::GetScreen()->GetNumDisplays(), 1);
-}
-
-}  // namespace