Convert //ash from scoped_ptr to std::unique_ptr

ash/accelerators/spoken_feedback_toggler_unittest.cc

 // Copyright 2014 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/accelerators/spoken_feedback_toggler.h"
 #include "ash/accessibility_delegate.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/window_util.h"
 #include "ui/aura/test/test_window_delegate.h"
@@ skipping 33 matching lines @@
   generator.PressKey(ui::VKEY_F6, ui::EF_SHIFT_DOWN);
   EXPECT_FALSE(delegate->IsSpokenFeedbackEnabled());
   generator.ReleaseKey(ui::VKEY_F6, 0);
   EXPECT_FALSE(delegate->IsSpokenFeedbackEnabled());
 }
 
 TEST_F(SpokenFeedbackTogglerTest, PassThroughEvents) {
   SpokenFeedbackToggler::ScopedEnablerForTest scoped;
 
   aura::test::EventCountDelegate delegate;
-  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithDelegate(
+  std::unique_ptr<aura::Window> window(CreateTestWindowInShellWithDelegate(
       &delegate, 0, gfx::Rect(0, 0, 100, 100)));
   window->Focus();
 
   ui::test::EventGenerator& generator = GetEventGenerator();
 
   // None hotkey events.
   generator.PressKey(ui::VKEY_A, 0);
   generator.ReleaseKey(ui::VKEY_F6, 0);
   EXPECT_EQ("1 1", delegate.GetKeyCountsAndReset());
 
   // Single hotkey press and release.
   generator.PressKey(ui::VKEY_F6, ui::EF_SHIFT_DOWN);
   generator.ReleaseKey(ui::VKEY_F6, 0);
   EXPECT_EQ("1 1", delegate.GetKeyCountsAndReset());
 
   // Hotkey press and hold.
   generator.PressKey(ui::VKEY_F6, ui::EF_SHIFT_DOWN);
   generator.PressKey(ui::VKEY_F6, ui::EF_SHIFT_DOWN);
   generator.PressKey(ui::VKEY_F6, ui::EF_SHIFT_DOWN);
   generator.ReleaseKey(ui::VKEY_F6, 0);
   EXPECT_EQ("3 1", delegate.GetKeyCountsAndReset());
 }
 
 }  // namespace ash