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

chrome/browser/ui/cocoa/download/download_item_controller_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 "chrome/browser/ui/cocoa/download/download_item_controller.h"
+
 #import <Cocoa/Cocoa.h>
 
+#include <memory>
+
 #import "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "chrome/browser/ui/cocoa/cocoa_profile_test.h"
 #import "chrome/browser/ui/cocoa/download/download_item_button.h"
-#import "chrome/browser/ui/cocoa/download/download_item_controller.h"
 #import "chrome/browser/ui/cocoa/download/download_shelf_controller.h"
 #include "content/public/test/mock_download_item.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 #import "third_party/ocmock/gtest_support.h"
 
 using ::testing::Return;
 using ::testing::ReturnRefOfCopy;
 
@@ skipping 66 matching lines @@
                                                      shelf:shelf_.get()
                                                  navigator:NULL]);
 
       [[test_window() contentView] addSubview:[item view]];
       run_loop.RunUntilIdle();
       return item.release();
     }
   }
 
  protected:
-  scoped_ptr<content::MockDownloadItem> download_item_;
+  std::unique_ptr<content::MockDownloadItem> download_item_;
   base::scoped_nsobject<DownloadShelfController> shelf_;
 };
 
 TEST_F(DownloadItemControllerTest, ShelfNotifiedOfOpenedDownload) {
   base::scoped_nsobject<DownloadItemController> item(CreateItemController());
   [[(id)shelf_ expect] downloadWasOpened:[OCMArg any]];
   download_item_->NotifyObserversDownloadOpened();
 }
 
 TEST_F(DownloadItemControllerTest, RemovesSelfWhenDownloadIsDestroyed) {
@@ skipping 70 matching lines @@
     // download item are mock objects.
     [downloadItemButton removeFromSuperview];
   }];
   // The unit test will stop here until the block causes the DownloadItemButton
   // to dismiss the menu.
   [item showContextMenu:nil];
 }
 
 
 }  // namespace