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

chrome/browser/profiles/profile_manager.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/profiles/profile_manager.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 872 matching lines @@
                                       base::Bind(&OnOpenWindowForNewProfile,
                                                  desktop_type,
                                                  callback),
                                       name,
                                       icon_url,
                                       is_managed);
 }
 
 // static
 void ProfileManager::RegisterPrefs(PrefRegistrySimple* registry) {
-  registry->RegisterStringPref(prefs::kProfileLastUsed, "");
+  registry->RegisterStringPref(prefs::kProfileLastUsed, std::string());
   registry->RegisterIntegerPref(prefs::kProfilesNumCreated, 1);
   registry->RegisterListPref(prefs::kProfilesLastActive);
 }
 
 size_t ProfileManager::GetNumberOfProfiles() {
   return GetProfileInfoCache().GetNumberOfProfiles();
 }
 
 bool ProfileManager::CompareProfilePathAndName(
     const ProfileManager::ProfilePathAndName& pair1,
@@ skipping 222 matching lines @@
 ProfileManager::ProfileInfo::ProfileInfo(
     Profile* profile,
     bool created)
     : profile(profile),
       created(created) {
 }
 
 ProfileManager::ProfileInfo::~ProfileInfo() {
   ProfileDestroyer::DestroyProfileWhenAppropriate(profile.release());
 }