GURL::Replacements methods accept a StringPiece instead of std::string&.

chrome/browser/ui/blocked_content/popup_blocker_browsertest.cc

 // Copyright 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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 350 matching lines @@
                           CONTENT_SETTINGS_TYPE_POPUPS,
                           std::string(),
                           CONTENT_SETTING_ALLOW);
 
   // Popup from the iframe should be allowed since the top-level URL is
   // whitelisted.
   NavigateAndCheckPopupShown(url, ExpectTab);
 
   // Whitelist iframe URL instead.
   GURL::Replacements replace_host;
-  std::string host_str("www.a.com");  // Must stay in scope with replace_host
-  replace_host.SetHostStr(host_str);
+  replace_host.SetHostStr("www.a.com");
   GURL frame_url(embedded_test_server()
                      ->GetURL("/popup_blocker/popup-frames-iframe.html")
                      .ReplaceComponents(replace_host));
   browser()->profile()->GetHostContentSettingsMap()->ClearSettingsForOneType(
       CONTENT_SETTINGS_TYPE_POPUPS);
   browser()->profile()->GetHostContentSettingsMap()
       ->SetContentSetting(ContentSettingsPattern::FromURL(frame_url),
                           ContentSettingsPattern::Wildcard(),
                           CONTENT_SETTINGS_TYPE_POPUPS,
                           std::string(),
@@ skipping 287 matching lines @@
   wait_for_new_tab.Wait();
 
   ASSERT_EQ(1u, chrome::GetBrowserCount(browser()->profile(),
                                         browser()->host_desktop_type()));
   ASSERT_EQ(2, browser()->tab_strip_model()->count());
   // Check that we create the background tab.
   ASSERT_EQ(0, browser()->tab_strip_model()->active_index());
 }
 
 }  // namespace