Convert //ash from scoped_ptr to std::unique_ptr

ash/display/screen_ash_unittest.cc

 // Copyright 2015 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 "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window.h"
 
@@ skipping 10 matching lines @@
 
 // Tests that ScreenAsh::GetWindowAtScreenPoint() returns the correct window on
 // the correct display.
 TEST_F(ScreenAshTest, TestGetWindowAtScreenPoint) {
   if (!SupportsMultipleDisplays())
     return;
 
   UpdateDisplay("200x200,400x400");
 
   aura::test::TestWindowDelegate delegate;
-  scoped_ptr<aura::Window> win1(CreateTestWindowInShellWithDelegate(
+  std::unique_ptr<aura::Window> win1(CreateTestWindowInShellWithDelegate(
       &delegate, 0, gfx::Rect(0, 0, 200, 200)));
 
-  scoped_ptr<aura::Window> win2(CreateTestWindowInShellWithDelegate(
+  std::unique_ptr<aura::Window> win2(CreateTestWindowInShellWithDelegate(
       &delegate, 1, gfx::Rect(200, 200, 100, 100)));
 
   ASSERT_NE(win1->GetRootWindow(), win2->GetRootWindow());
 
   EXPECT_EQ(win1.get(), gfx::Screen::GetScreen()->GetWindowAtScreenPoint(
                             gfx::Point(50, 60)));
   EXPECT_EQ(win2.get(), gfx::Screen::GetScreen()->GetWindowAtScreenPoint(
                             gfx::Point(250, 260)));
 }
 
 }  // namespace ash