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

chrome/browser/extensions/window_open_apitest.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/command_line.h"
 #include "base/memory/scoped_vector.h"
 #include "base/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 186 matching lines @@
   ASSERT_TRUE(test_server()->Start());
 
   ASSERT_TRUE(LoadExtension(
       test_data_dir_.AppendASCII("window_open").AppendASCII("popup_blocking")
       .AppendASCII("hosted_app")));
 
   // The app being tested owns the domain a.com .  The test URLs we navigate
   // to below must be within that domain, so that they fall within the app's
   // web extent.
   GURL::Replacements replace_host;
-  std::string a_dot_com = "a.com";
-  replace_host.SetHostStr(a_dot_com);
+  replace_host.SetHostStr("a.com");
 
   const std::string popup_app_contents_path(
     "files/extensions/api_test/window_open/popup_blocking/hosted_app/");
 
   GURL open_tab =
       test_server()->GetURL(popup_app_contents_path + "open_tab.html")
           .ReplaceComponents(replace_host);
   GURL open_popup =
       test_server()->GetURL(popup_app_contents_path + "open_popup.html")
           .ReplaceComponents(replace_host);
@@ skipping 287 matching lines @@
                      last_loaded_extension_id() + "/newtab.html"),
                  false,
                  &newtab));
 
   // Extension API should succeed.
   bool result = false;
   ASSERT_TRUE(content::ExecuteScriptAndExtractBool(newtab, "testExtensionApi()",
                                                    &result));
   EXPECT_TRUE(result);
 }