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

chrome/browser/content_settings/content_settings_utils.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/content_settings/content_settings_utils.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 172 matching lines @@
                                  bool include_incognito) {
   scoped_ptr<base::Value> value(
       GetContentSettingValue(provider, primary_url, secondary_url,
                              content_type, resource_identifier,
                              include_incognito));
   return ValueToContentSetting(value.get());
 }
 
 void GetRendererContentSettingRules(const HostContentSettingsMap* map,
                                     RendererContentSettingRules* rules) {
-  map->GetSettingsForOneType(CONTENT_SETTINGS_TYPE_IMAGES, "",
-                             &(rules->image_rules));
-  map->GetSettingsForOneType(CONTENT_SETTINGS_TYPE_JAVASCRIPT, "",
-                             &(rules->script_rules));
+  map->GetSettingsForOneType(
+      CONTENT_SETTINGS_TYPE_IMAGES, std::string(), &(rules->image_rules));
+  map->GetSettingsForOneType(
+      CONTENT_SETTINGS_TYPE_JAVASCRIPT, std::string(), &(rules->script_rules));
 }
 
 }  // namespace content_settings