convert //headless to std::unique_ptr

headless/lib/browser/headless_browser_context.cc

 // Copyright 2015 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 "headless/lib/browser/headless_browser_context.h"
 
+#include <memory>
+
 #include "base/path_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/storage_partition.h"
 #include "headless/lib/browser/headless_url_request_context_getter.h"
 #include "net/url_request/url_request_context.h"
 
 namespace headless {
 
 // Contains net::URLRequestContextGetter required for resource loading.
@@ skipping 53 matching lines @@
                                        resource_context_.release());
   }
 }
 
 void HeadlessBrowserContext::InitWhileIOAllowed() {
   // TODO(skyostil): Allow the embedder to override this.
   PathService::Get(base::DIR_EXE, &path_);
   BrowserContext::Initialize(this, path_);
 }
 
-scoped_ptr<content::ZoomLevelDelegate>
+std::unique_ptr<content::ZoomLevelDelegate>
 HeadlessBrowserContext::CreateZoomLevelDelegate(
     const base::FilePath& partition_path) {
-  return scoped_ptr<content::ZoomLevelDelegate>();
+  return std::unique_ptr<content::ZoomLevelDelegate>();
 }
 
 base::FilePath HeadlessBrowserContext::GetPath() const {
   return path_;
 }
 
 bool HeadlessBrowserContext::IsOffTheRecord() const {
   return false;
 }
 
@@ skipping 60 matching lines @@
     const HeadlessBrowser::Options& options) {
   options_ = options;
 }
 
 void HeadlessBrowserContext::SetURLRequestContextGetter(
     scoped_refptr<net::URLRequestContextGetter> url_request_context_getter) {
   resource_context_->set_url_request_context_getter(url_request_context_getter);
 }
 
 }  // namespace headless