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

chrome/browser/signin/about_signin_internals.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.h"
 
 #include "base/debug/trace_event.h"
 #include "base/hash.h"
 #include "base/i18n/time_formatting.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/signin_internals_util.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/signin/token_service.h"
 #include "chrome/browser/signin/token_service_factory.h"
 #include "chrome/browser/ui/webui/signin_internals_ui.h"
 #include "google_apis/gaia/gaia_constants.h"
 
 using namespace signin_internals_util;
 
 AboutSigninInternals::AboutSigninInternals() : profile_(NULL) {
   // Initialize default values for tokens.
   for (size_t i = 0; i < kNumTokenPrefs; ++i) {
     signin_status_.token_info_map.insert(std::pair<std::string, TokenInfo>(
         kTokenPrefsArray[i],
-        TokenInfo("", "Not Loaded", "", kTokenPrefsArray[i])));
+        TokenInfo(
+            std::string(), "Not Loaded", std::string(), kTokenPrefsArray[i])));
   }
 }
 
 AboutSigninInternals::~AboutSigninInternals() {
 }
 
 void AboutSigninInternals::AddSigninObserver(
     AboutSigninInternals::Observer* observer) {
   signin_observers_.AddObserver(observer);
 }
@@ skipping 124 matching lines @@
   DCHECK(signin_status_.token_info_map.count(token_name));
 
   signin_status_.token_info_map[token_name].token.clear();
   signin_status_.token_info_map[token_name].status = error;
   signin_status_.token_info_map[token_name].time = time_as_str;
 
   // Also update preferences.
   const std::string value_pref = TokenPrefPath(token_name) + ".value";
   const std::string time_pref = TokenPrefPath(token_name) + ".time";
   const std::string status_pref = TokenPrefPath(token_name) + ".status";
-  profile_->GetPrefs()->SetString(value_pref.c_str(), "");
+  profile_->GetPrefs()->SetString(value_pref.c_str(), std::string());
   profile_->GetPrefs()->SetString(time_pref.c_str(), time_as_str);
   profile_->GetPrefs()->SetString(status_pref.c_str(), error);
 
   NotifyObservers();
 }
 
 // While clearing tokens, we don't update the time or status.
 void AboutSigninInternals::NotifyClearStoredToken(
     const std::string& token_name) {
   // This should have been initialized already.
   DCHECK(signin_status_.token_info_map.count(token_name));
 
   signin_status_.token_info_map[token_name].token.clear();
 
   const std::string value_pref = TokenPrefPath(token_name) + ".value";
-  profile_->GetPrefs()->SetString(value_pref.c_str(), "");
+  profile_->GetPrefs()->SetString(value_pref.c_str(), std::string());
 
   NotifyObservers();
 }
 
 void AboutSigninInternals::Initialize(Profile* profile) {
   DCHECK(!profile_);
   profile_ = profile;
 
   RefreshSigninPrefs();
 
@@ skipping 12 matching lines @@
 
 void AboutSigninInternals::NotifyObservers() {
   FOR_EACH_OBSERVER(AboutSigninInternals::Observer,
                     signin_observers_,
                     OnSigninStateChanged(signin_status_.ToValue()));
 }
 
 scoped_ptr<DictionaryValue> AboutSigninInternals::GetSigninStatus() {
   return signin_status_.ToValue().Pass();
 }