Rewrite std::string("") to std::string(), Linux edition.

chrome/browser/extensions/isolated_app_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/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/automation/automation_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 310 matching lines @@
 // Tests that subresource and media requests use the app's cookie store.
 // See http://crbug.com/141172.
 IN_PROC_BROWSER_TEST_F(IsolatedAppTest, MAYBE_SubresourceCookieIsolation) {
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(test_server()->Start());
 
   ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("isolated_apps/app1")));
 
   // The app under test acts on URLs whose host is "localhost",
   // so the URLs we navigate to must have host "localhost".
-  GURL root_url = test_server()->GetURL("");
+  GURL root_url = test_server()->GetURL(std::string());
   GURL base_url = test_server()->GetURL("files/extensions/isolated_apps/");
   GURL::Replacements replace_host;
   std::string host_str("localhost");  // Must stay in scope with replace_host.
   replace_host.SetHostStr(host_str);
   root_url = root_url.ReplaceComponents(replace_host);
   base_url = base_url.ReplaceComponents(replace_host);
 
   // First set cookies inside and outside the app.
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), root_url.Resolve("set-cookie?nonApp=1"),
@@ skipping 166 matching lines @@
   EXPECT_EQ("ss_app2", result);
 
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), base_url.Resolve("non_app/main.html"),
       CURRENT_TAB, ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   ASSERT_TRUE(ExecuteScriptAndExtractString(
       browser()->tab_strip_model()->GetWebContentsAt(0),
       kRetrieveSessionStorage.c_str(), &result));
   EXPECT_EQ("ss_normal", result);
 }