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

chrome/browser/ui/webui/chromeos/login/user_image_screen_handler.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/ui/webui/chromeos/login/user_image_screen_handler.h"
 
 #include "ash/audio/sounds.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 115 matching lines @@
               &UserImageScreenHandler::HandleImageAccepted);
   AddCallback("onUserImageScreenShown",
               &UserImageScreenHandler::HandleScreenShown);
 }
 
 // TODO(antrim) : It looks more like parameters for "Init" rather than callback.
 void UserImageScreenHandler::HandleGetImages() {
   base::ListValue image_urls;
   for (int i = default_user_image::kFirstDefaultImageIndex;
        i < default_user_image::kDefaultImagesCount; ++i) {
-    scoped_ptr<base::DictionaryValue> image_data(new base::DictionaryValue);
+    std::unique_ptr<base::DictionaryValue> image_data(
+        new base::DictionaryValue);
     image_data->SetString("url", default_user_image::GetDefaultImageUrl(i));
     image_data->SetString("author",
                           l10n_util::GetStringUTF16(
                               default_user_image::kDefaultImageAuthorIDs[i]));
     image_data->SetString("website",
                           l10n_util::GetStringUTF16(
                               default_user_image::kDefaultImageWebsiteIDs[i]));
     image_data->SetString("title",
                           default_user_image::GetDefaultImageDescription(i));
     image_urls.Append(image_data.release());
@@ skipping 43 matching lines @@
   base::TimeDelta delta = base::Time::Now() - screen_show_time_;
   VLOG(1) << "Screen load time: " << delta.InSecondsF();
   UMA_HISTOGRAM_TIMES("UserImage.ScreenIsShownTime", delta);
 }
 
 void UserImageScreenHandler::HideCurtain() {
   CallJS("hideCurtain");
 }
 
 }  // namespace chromeos