convert //headless to std::unique_ptr

headless/lib/headless_web_contents_browsertest.cc

 // Copyright 2016 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 <memory>
+
 #include "content/public/test/browser_test.h"
 #include "headless/public/headless_browser.h"
 #include "headless/public/headless_web_contents.h"
 #include "headless/test/headless_browser_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/geometry/size.h"
 #include "url/gurl.h"
 
 namespace headless {
 
 class HeadlessWebContentsTest : public HeadlessBrowserTest {};
 
 IN_PROC_BROWSER_TEST_F(HeadlessWebContentsTest, Navigation) {
   EXPECT_TRUE(embedded_test_server()->Start());
-  scoped_ptr<HeadlessWebContents> web_contents =
+  std::unique_ptr<HeadlessWebContents> web_contents =
       browser()->CreateWebContents(gfx::Size(800, 600));
   EXPECT_TRUE(NavigateAndWaitForLoad(
       web_contents.get(), embedded_test_server()->GetURL("/hello.html")));
 }
 
 IN_PROC_BROWSER_TEST_F(HeadlessWebContentsTest, NavigationWithBadURL) {
-  scoped_ptr<HeadlessWebContents> web_contents =
+  std::unique_ptr<HeadlessWebContents> web_contents =
       browser()->CreateWebContents(gfx::Size(800, 600));
   GURL bad_url("not_valid");
   EXPECT_FALSE(web_contents->OpenURL(bad_url));
 }
 
 }  // namespace headless