Convert //ash from scoped_ptr to std::unique_ptr

ash/wm/window_util_unittest.cc

 // Copyright (c) 2013 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/wm/window_util.h"
 
 #include "ash/screen_util.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/window_state.h"
 #include "ui/aura/window.h"
@@ skipping 10 matching lines @@
 
 }
 
 typedef test::AshTestBase WindowUtilTest;
 
 TEST_F(WindowUtilTest, CenterWindow) {
   if (!SupportsMultipleDisplays())
     return;
 
   UpdateDisplay("500x400, 600x400");
-  scoped_ptr<aura::Window> window(
+  std::unique_ptr<aura::Window> window(
       CreateTestWindowInShellWithBounds(gfx::Rect(12, 20, 100, 100)));
 
   wm::WindowState* window_state = wm::GetWindowState(window.get());
   EXPECT_FALSE(window_state->bounds_changed_by_user());
 
   wm::CenterWindow(window.get());
   // Centring window is considered as a user's action.
   EXPECT_TRUE(window_state->bounds_changed_by_user());
   EXPECT_EQ("200,126 100x100", window->bounds().ToString());
   EXPECT_EQ("200,126 100x100", window->GetBoundsInScreen().ToString());
@@ skipping 45 matching lines @@
       "-250,-40 100x100",
       GetAdjustedBounds(visible_bounds_left, gfx::Rect(-250, -40, 150, 150)));
   EXPECT_EQ(
       "-275,-50 100x100",
       GetAdjustedBounds(visible_bounds_left, gfx::Rect(-400, -60, 150, 150)));
   EXPECT_EQ("-125,0 100x100",
             GetAdjustedBounds(visible_bounds_left, gfx::Rect(0, 0, 150, 150)));
 }
 
 }  // namespace ash