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

chrome/browser/ui/cocoa/bookmarks/bookmark_model_observer_for_cocoa_unittest.mm

 // 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.
 
+#import "chrome/browser/ui/cocoa/bookmarks/bookmark_model_observer_for_cocoa.h"
+
 #import <Cocoa/Cocoa.h>
 #include <stddef.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
-#import "chrome/browser/ui/cocoa/bookmarks/bookmark_model_observer_for_cocoa.h"
 #import "chrome/browser/ui/cocoa/cocoa_profile_test.h"
 #include "chrome/test/base/testing_profile.h"
 
 using bookmarks::BookmarkModel;
 using bookmarks::BookmarkNode;
 
 namespace {
 
 class BookmarkModelObserverForCocoaTest : public CocoaProfileTest {
 };
 
 
 TEST_F(BookmarkModelObserverForCocoaTest, TestCallback) {
   BookmarkModel* model = BookmarkModelFactory::GetForProfile(profile());
   const BookmarkNode* node = model->AddURL(model->bookmark_bar_node(),
                                            0, base::ASCIIToUTF16("super"),
                                            GURL("http://www.google.com"));
 
   __block size_t pings = 0U;
 
   BookmarkModelObserverForCocoa::ChangeCallback callback = ^() {
     ++pings;
   };
 
-  scoped_ptr<BookmarkModelObserverForCocoa>
-      observer(new BookmarkModelObserverForCocoa(model,
-                                                 callback));
+  std::unique_ptr<BookmarkModelObserverForCocoa> observer(
+      new BookmarkModelObserverForCocoa(model, callback));
   observer->StartObservingNode(node);
 
   EXPECT_EQ(0U, pings);
 
   model->SetTitle(node, base::ASCIIToUTF16("duper"));
   EXPECT_EQ(1U, pings);
 
   model->SetURL(node, GURL("http://www.google.com/reader"));
   EXPECT_EQ(2U, pings);
 
   model->Move(node, model->other_node(), 0);
   EXPECT_EQ(3U, pings);
 
   model->Remove(node->parent()->GetChild(0));
   EXPECT_EQ(4U, pings);
 }
 
 }  // namespace