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

components/google/core/browser/google_util.cc

 // Copyright 2014 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/google/core/browser/google_util.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 114 matching lines @@
   // Catalonia does not have a CLDR country code, since it's a region in Spain,
   // so use Spain instead.
   if (country_code == "cat")
     return "es";
   return country_code;
 }
 
 GURL GetGoogleSearchURL(GURL google_homepage_url) {
   // To transform the homepage URL into the corresponding search URL, add the
   // "search" and the "q=" query string.
-  std::string search_path = "search";
-  std::string query_string = "q=";
   GURL::Replacements replacements;
-  replacements.SetPathStr(search_path);
-  replacements.SetQueryStr(query_string);
+  replacements.SetPathStr("search");
+  replacements.SetQueryStr("q=");
   return google_homepage_url.ReplaceComponents(replacements);
 }
 
 GURL CommandLineGoogleBaseURL() {
   // Unit tests may add command-line flags after the first call to this
   // function, so we don't simply initialize a static |base_url| directly and
   // then unconditionally return it.
   CR_DEFINE_STATIC_LOCAL(std::string, switch_value, ());
   CR_DEFINE_STATIC_LOCAL(GURL, base_url, ());
   std::string current_switch_value(
@@ skipping 58 matching lines @@
 }
 
 bool IsYoutubeDomainUrl(const GURL& url,
                         SubdomainPermission subdomain_permission,
                         PortPermission port_permission) {
   return IsValidURL(url, port_permission) &&
       IsValidHostName(url.host(), "youtube", subdomain_permission);
 }
 
 }  // namespace google_util