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

chrome/browser/net/cookie_policy_browsertest.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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 45 matching lines @@
                                                true);
 
   GURL url(test_server()->GetURL("server-redirect?"));
   GURL redirected_url(test_server()->GetURL("set-cookie?cookie2"));
 
   // Change the host name from 127.0.0.1 to www.example.com so it triggers
   // third-party cookie blocking if the first party for cookies URL is not
   // changed when we follow a redirect.
   ASSERT_EQ("127.0.0.1", redirected_url.host());
   GURL::Replacements replacements;
-  std::string new_host("www.example.com");
-  replacements.SetHostStr(new_host);
+  replacements.SetHostStr("www.example.com");
   redirected_url = redirected_url.ReplaceComponents(replacements);
 
   std::string cookie =
       content::GetCookies(browser()->profile(), redirected_url);
   ASSERT_EQ("", cookie);
 
   host_resolver()->AddRule("www.example.com", "127.0.0.1");
 
   ui_test_utils::NavigateToURL(browser(),
                                GURL(url.spec() + redirected_url.spec()));
 
   cookie = content::GetCookies(browser()->profile(), redirected_url);
   EXPECT_EQ("cookie2", cookie);
 }
 
 }  // namespace