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

chrome/browser/extensions/extension_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 "chrome/browser/extensions/extension_browsertest.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 319 matching lines @@
       Delegate* delegate,
       const Extension* extension,
       const ShowDialogCallback& show_dialog_callback) OVERRIDE {
     delegate->InstallUIProceed();
   }
 };
 
 const Extension* ExtensionBrowserTest::InstallExtensionFromWebstore(
     const base::FilePath& path,
     int expected_change) {
-  return InstallOrUpdateExtension("", path, INSTALL_UI_TYPE_NONE,
-                                  expected_change, Manifest::INTERNAL,
-                                  browser(), true);
+  return InstallOrUpdateExtension(std::string(),
+                                  path,
+                                  INSTALL_UI_TYPE_NONE,
+                                  expected_change,
+                                  Manifest::INTERNAL,
+                                  browser(),
+                                  true);
 }
 
 const Extension* ExtensionBrowserTest::InstallOrUpdateExtension(
     const std::string& id,
     const base::FilePath& path,
     InstallUIType ui_type,
     int expected_change) {
   return InstallOrUpdateExtension(id, path, ui_type, expected_change,
                                   Manifest::INTERNAL, browser(), false);
 }
@@ skipping 378 matching lines @@
     case content::NOTIFICATION_LOAD_STOP:
       VLOG(1) << "Got LOAD_STOP notification.";
       MessageLoopForUI::current()->Quit();
       break;
 
     default:
       NOTREACHED();
       break;
   }
 }