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

chrome/test/webdriver/commands/command.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/test/webdriver/commands/command.h"
 
 namespace webdriver {
 
 Command::Command(const std::vector<std::string>& path_segments,
                  const DictionaryValue* const parameters)
@@ skipping 14 matching lines @@
   return false;
 }
 
 bool Command::Init(Response* const response) {
   return true;
 }
 
 void Command::Finish(Response* const response) {}
 
 std::string Command::GetPathVariable(const size_t i) const {
-  return i < path_segments_.size() ? path_segments_.at(i) : "";
+  return i < path_segments_.size() ? path_segments_.at(i) : std::string();
 }
 
 bool Command::HasParameter(const std::string& key) const {
   return parameters_.get() && parameters_->HasKey(key);
 }
 
 bool Command::IsNullParameter(const std::string& key) const {
   const Value* value;
   return parameters_.get() &&
          parameters_->Get(key, &value) &&
@@ skipping 33 matching lines @@
                                      const DictionaryValue** out) const {
   return parameters_.get() != NULL && parameters_->GetDictionary(key, out);
 }
 
 bool Command::GetListParameter(const std::string& key,
                                const ListValue** out) const {
   return parameters_.get() != NULL && parameters_->GetList(key, out);
 }
 
 }  // namespace webdriver