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

content/test/browser_test_utils_browsertest.cc

Index: content/test/browser_test_utils_browsertest.cc
diff --git a/content/test/browser_test_utils_browsertest.cc b/content/test/browser_test_utils_browsertest.cc
index de64115f602a4bcea73f8ede1160cdad7f0c3d54..15f65aee3c4752f5af5ec61b6820a5f7fbe7d8ff 100644
--- a/content/test/browser_test_utils_browsertest.cc
+++ b/content/test/browser_test_utils_browsertest.cc
@@ -70,9 +70,8 @@ IN_PROC_BROWSER_TEST_F(CrossSiteRedirectorBrowserTest,
   // hostname supplied in the URL and rewrite the URL. Build the
   // expected URL to ensure navigation was properly redirected.
   GURL::Replacements replace_host;
-  std::string foo_com("foo.com");
   GURL expected_url(embedded_test_server()->GetURL("/title2.html"));
-  replace_host.SetHostStr(foo_com);
+  replace_host.SetHostStr("foo.com");
   expected_url = expected_url.ReplaceComponents(replace_host);
 
   EXPECT_EQ(expected_url, observer.navigation_url());