Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa_unittest.mm

 // Copyright 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.
 
 #import "chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/cocoa/cocoa_test_helper.h"
@@ skipping 29 matching lines @@
 
   void StopCallback() {
     ++callback_called_;
   }
 
  protected:
   ScreenCaptureNotificationController* controller() {
     return target_->windowController_.get();
   }
 
-  scoped_ptr<ScreenCaptureNotificationUICocoa> target_;
+  std::unique_ptr<ScreenCaptureNotificationUICocoa> target_;
   int callback_called_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureNotificationUICocoaTest);
 };
 
 TEST_F(ScreenCaptureNotificationUICocoaTest, CreateAndDestroy) {
   target_.reset(
       new ScreenCaptureNotificationUICocoa(base::UTF8ToUTF16("Title")));
 }
 
@@ skipping 55 matching lines @@
       new ScreenCaptureNotificationUICocoa(base::UTF8ToUTF16("Title")));
   target_->OnStarted(
       base::Bind(&ScreenCaptureNotificationUICocoaTest::StopCallback,
                  base::Unretained(this)));
 
   [[controller() minimizeButton] performClick:nil];
 
   EXPECT_EQ(0, callback_called_);
   EXPECT_TRUE([[controller() window] isMiniaturized]);
 }