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

chrome/browser/signin/about_signin_internals_factory.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/signin/about_signin_internals_factory.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/signin/about_signin_internals.h"
 #include "chrome/browser/signin/signin_internals_util.h"
@@ skipping 24 matching lines @@
 AboutSigninInternalsFactory* AboutSigninInternalsFactory::GetInstance() {
   return Singleton<AboutSigninInternalsFactory>::get();
 }
 
 void AboutSigninInternalsFactory::RegisterUserPrefs(
     PrefRegistrySyncable* user_prefs) {
   // SigninManager information for about:signin-internals.
   for (int i = UNTIMED_FIELDS_BEGIN; i < UNTIMED_FIELDS_END; ++i) {
     const std::string pref_path = SigninStatusFieldToString(
         static_cast<UntimedSigninStatusField>(i));
-    user_prefs->RegisterStringPref(pref_path.c_str(), "",
+    user_prefs->RegisterStringPref(pref_path.c_str(),
+                                   std::string(),
                                    PrefRegistrySyncable::UNSYNCABLE_PREF);
   }
   for (int i = TIMED_FIELDS_BEGIN; i < TIMED_FIELDS_END; ++i) {
     const std::string value = SigninStatusFieldToString(
         static_cast<TimedSigninStatusField>(i)) + ".value";
     const std::string time = SigninStatusFieldToString(
         static_cast<TimedSigninStatusField>(i)) + ".time";
-    user_prefs->RegisterStringPref(value.c_str(), "",
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
-    user_prefs->RegisterStringPref(time.c_str(), "",
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
+    user_prefs->RegisterStringPref(
+        value.c_str(), std::string(), PrefRegistrySyncable::UNSYNCABLE_PREF);
+    user_prefs->RegisterStringPref(
+        time.c_str(), std::string(), PrefRegistrySyncable::UNSYNCABLE_PREF);
   }
   // TokenService information for about:signin-internals.
   for (size_t i = 0; i < kNumTokenPrefs; i++) {
     const std::string pref = TokenPrefPath(kTokenPrefsArray[i]);
     const std::string value = pref + ".value";
     const std::string status = pref + ".status";
     const std::string time = pref + ".time";
-    user_prefs->RegisterStringPref(value.c_str(), "",
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
-    user_prefs->RegisterStringPref(status.c_str(), "",
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
-    user_prefs->RegisterStringPref(time.c_str(), "",
-                                   PrefRegistrySyncable::UNSYNCABLE_PREF);
+    user_prefs->RegisterStringPref(
+        value.c_str(), std::string(), PrefRegistrySyncable::UNSYNCABLE_PREF);
+    user_prefs->RegisterStringPref(
+        status.c_str(), std::string(), PrefRegistrySyncable::UNSYNCABLE_PREF);
+    user_prefs->RegisterStringPref(
+        time.c_str(), std::string(), PrefRegistrySyncable::UNSYNCABLE_PREF);
   }
 }
 
 ProfileKeyedService* AboutSigninInternalsFactory::BuildServiceInstanceFor(
     Profile* profile) const {
   AboutSigninInternals* service = new AboutSigninInternals();
   service->Initialize(profile);
   return service;
 }