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

chrome/renderer/chrome_content_renderer_client_unittest.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/renderer/chrome_content_renderer_client.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_builder.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
@@ skipping 78 matching lines @@
     manifest.Set(extension_manifest_keys::kWebURLs, url_list);
     manifest.SetString(extension_manifest_keys::kLaunchWebURL, app_url);
   }
   std::string error;
   return extensions::Extension::Create(base::FilePath(), location, manifest,
                                        flags, &error);
 }
 
 scoped_refptr<const extensions::Extension> CreateExtension(
     bool is_unrestricted, bool is_from_webstore) {
-  return CreateTestExtension(is_unrestricted, is_from_webstore, kNotHostedApp,
-                             "");
+  return CreateTestExtension(
+      is_unrestricted, is_from_webstore, kNotHostedApp, std::string());
 }
 
 scoped_refptr<const extensions::Extension> CreateHostedApp(
     bool is_unrestricted, bool is_from_webstore, const std::string& app_url) {
   return CreateTestExtension(is_unrestricted, is_from_webstore, kHostedApp,
                              app_url);
 }
 
 TEST_F(ChromeContentRendererClientTest, NaClRestriction) {
   // Unknown content types have no NaCl module.
@@ skipping 225 matching lines @@
            kRandomExtensionID + "/foo")));
   EXPECT_TRUE(client.IsRequestOSFileHandleAllowedForURL(
       GURL("filesystem:http://127.0.0.1/foo")));
   EXPECT_FALSE(client.IsRequestOSFileHandleAllowedForURL(
       GURL("http://127.0.0.1/foo")));
   EXPECT_TRUE(client.IsRequestOSFileHandleAllowedForURL(
       GURL("filesystem:http://192.168.0.1/foo")));
 }
 
 }  // namespace chrome