Replace scoped_ptr with std::unique_ptr in //ui

ui/views/controls/button/label_button_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/views/controls/button/label_button.h"
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/accessibility/ax_view_state.h"
@@ skipping 458 matching lines @@
   }
 
   void TearDown() override {
     widget_.reset();
     ViewsTestBase::TearDown();
     ui::test::MaterialDesignControllerTestAPI::UninitializeMode();
   }
 
  protected:
   // Required to host the test target.
-  scoped_ptr<Widget> widget_;
+  std::unique_ptr<Widget> widget_;
 
   // The test target.
   InkDropLabelButton* button_ = nullptr;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InkDropLabelButtonTest);
 };
 
 TEST_F(InkDropLabelButtonTest, HoverStateAfterMouseEnterAndExitEvents) {
   ui::test::EventGenerator event_generator(GetContext(),
@@ skipping 14 matching lines @@
 
 // Verifies the target event handler View is the |LabelButton| and not any of
 // the child Views.
 TEST_F(InkDropLabelButtonTest, TargetEventHandler) {
   View* target_view = widget_->GetRootView()->GetEventHandlerForPoint(
       button_->bounds().CenterPoint());
   EXPECT_EQ(button_, target_view);
 }
 
 }  // namespace views