Replace scoped_ptr with std::unique_ptr in //ui

ui/views/cocoa/cocoa_mouse_capture_unittest.mm

 // 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.
 
 #import "ui/views/cocoa/cocoa_mouse_capture.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
@@ skipping 32 matching lines @@
   void SimulateDestroy() { mouse_capture_.reset(); }
 
   int event_count() { return event_count_; }
   int capture_lost_count() { return capture_lost_count_; }
 
   // CocoaMouseCaptureDelegate:
   void PostCapturedEvent(NSEvent* event) override { ++event_count_; }
   void OnMouseCaptureLost() override { ++capture_lost_count_; }
 
  private:
-  scoped_ptr<CocoaMouseCapture> mouse_capture_;
+  std::unique_ptr<CocoaMouseCapture> mouse_capture_;
   int event_count_;
   int capture_lost_count_;
 
   DISALLOW_COPY_AND_ASSIGN(TestCaptureDelegate);
 };
 
 }  // namespace
 
 typedef ui::CocoaTest CocoaMouseCaptureTest;
 
@@ skipping 55 matching lines @@
     EXPECT_EQ(1, [view mouseDownCount]);
     EXPECT_EQ(1, capture.event_count());
   }
 
   // After the capture goes away, events should be received again.
   [NSApp sendEvent:click.first];
   EXPECT_EQ(2, [view mouseDownCount]);
 }
 
 }  // namespace views