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

webkit/tools/test_shell/test_shell.h

 // 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.
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_
 
 
 #include <list>
 #include <map>
@@ skipping 225 matching lines @@
     // Set the number of times to load each URL.
     static void SetMultipleLoad(int load_count) {
       load_count_ = load_count;
     }
 
     // Get the number of times to load each URL.
     static int GetLoadCount() { return load_count_; }
 
     // Get the JavaScript flags for a specific load
     static std::string GetJSFlagsForLoad(size_t load) {
-      if (load >= js_flags_.size()) return "";
+      if (load >= js_flags_.size())
+        return std::string();
       return js_flags_[load];
     }
 
 #if defined(OS_WIN)
     // Access to the finished event.  Used by the static WatchDog
     // thread.
     HANDLE finished_event() { return finished_event_; }
 #endif
 
     // Have the shell print the StatsTable to stdout on teardown.
@@ skipping 142 matching lines @@
 #if defined(OS_WIN)
     // Used by the watchdog to know when it's finished.
     HANDLE finished_event_;
 #endif
 
     // Dump the stats table counters on exit.
     bool dump_stats_table_on_exit_;
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_H_