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

chrome/browser/signin/about_signin_internals_factory.cc

Index: chrome/browser/signin/about_signin_internals_factory.cc
diff --git a/chrome/browser/signin/about_signin_internals_factory.cc b/chrome/browser/signin/about_signin_internals_factory.cc
index ccce353befeb3cb14d264d4fd03c80ae70b62280..f5f197f49be6f86272856d798eccdd3ae57b1044 100644
--- a/chrome/browser/signin/about_signin_internals_factory.cc
+++ b/chrome/browser/signin/about_signin_internals_factory.cc
@@ -42,7 +42,8 @@ void AboutSigninInternalsFactory::RegisterUserPrefs(
   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) {
@@ -50,10 +51,10 @@ void AboutSigninInternalsFactory::RegisterUserPrefs(
         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++) {
@@ -61,12 +62,12 @@ void AboutSigninInternalsFactory::RegisterUserPrefs(
     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);
   }
 }