Update SupportsUserData uses with unique_ptr.

components/pdf/browser/pdf_web_contents_helper.cc

 // 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.
 
 #include "components/pdf/browser/pdf_web_contents_helper.h"
 
 #include <utility>
 
 #include "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/pdf/browser/pdf_web_contents_helper_client.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(pdf::PDFWebContentsHelper);
 
 namespace pdf {
 
 // static
 void PDFWebContentsHelper::CreateForWebContentsWithClient(
     content::WebContents* contents,
     std::unique_ptr<PDFWebContentsHelperClient> client) {
   if (FromWebContents(contents))
     return;
-  contents->SetUserData(UserDataKey(),
-                        new PDFWebContentsHelper(contents, std::move(client)));
+  contents->SetUserData(
+      UserDataKey(),
+      base::WrapUnique(new PDFWebContentsHelper(contents, std::move(client))));
 }
 
 PDFWebContentsHelper::PDFWebContentsHelper(
     content::WebContents* web_contents,
     std::unique_ptr<PDFWebContentsHelperClient> client)
     : content::WebContentsObserver(web_contents),
       pdf_service_bindings_(web_contents, this),
       client_(std::move(client)) {}
 
 PDFWebContentsHelper::~PDFWebContentsHelper() {
 }
 
 void PDFWebContentsHelper::HasUnsupportedFeature() {
   client_->OnPDFHasUnsupportedFeature(web_contents());
 }
 
 void PDFWebContentsHelper::SaveUrlAs(const GURL& url,
                                      const content::Referrer& referrer) {
   client_->OnSaveURL(web_contents());
   web_contents()->SaveFrame(url, referrer);
 }
 
 void PDFWebContentsHelper::UpdateContentRestrictions(
     int32_t content_restrictions) {
   client_->UpdateContentRestrictions(web_contents(), content_restrictions);
 }
 
 }  // namespace pdf