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

chrome/browser/search/search.cc

Index: chrome/browser/search/search.cc
diff --git a/chrome/browser/search/search.cc b/chrome/browser/search/search.cc
index a1d5a71038dbf1062df4ad8d5b1789bee71e1f79..6c39f23cff5e675e63ed953c220985f232fd30c4 100644
--- a/chrome/browser/search/search.cc
+++ b/chrome/browser/search/search.cc
@@ -486,8 +486,7 @@ GURL GetInstantURL(Profile* profile, bool force_instant_results) {
   if (!instant_url.SchemeIsSecure() &&
       !google_util::StartsWithCommandLineGoogleBaseURL(instant_url)) {
     GURL::Replacements replacements;
-    const std::string secure_scheme(url::kHttpsScheme);
-    replacements.SetSchemeStr(secure_scheme);
+    replacements.SetSchemeStr(url::kHttpsScheme);
     instant_url = instant_url.ReplaceComponents(replacements);
   }