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

chrome/browser/net/proxy_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/command_line.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 111 matching lines @@
   // |observer| supplies the credential.
   LoginPromptObserver observer;
   registrar.Add(&observer, chrome::NOTIFICATION_AUTH_NEEDED,
                 content::Source<content::NavigationController>(controller));
 
   content::TitleWatcher watcher(tab, base::ASCIIToUTF16("PASS"));
   watcher.AlsoWaitForTitle(base::ASCIIToUTF16("FAIL"));
 
   // Visit a page that tries to establish WebSocket connection. The title
   // of the page will be 'PASS' on success.
-  std::string scheme("http");
   GURL::Replacements replacements;
-  replacements.SetSchemeStr(scheme);
+  replacements.SetSchemeStr("http");
   ui_test_utils::NavigateToURL(browser(),
                                ws_server.GetURL("proxied_request_check.html")
                                    .ReplaceComponents(replacements));
 
   const base::string16 result = watcher.WaitAndGetTitle();
   EXPECT_TRUE(EqualsASCII(result, "PASS"));
   EXPECT_TRUE(observer.auth_handled());
 }
 
 // Fetch PAC script via an http:// URL.
@@ skipping 99 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DataProxyScriptBrowserTest);
 };
 
 IN_PROC_BROWSER_TEST_F(DataProxyScriptBrowserTest, Verify) {
   VerifyProxyScript(browser());
 }
 
 }  // namespace