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

chrome/browser/signin/signin_internals_util.cc

Index: chrome/browser/signin/signin_internals_util.cc
diff --git a/chrome/browser/signin/signin_internals_util.cc b/chrome/browser/signin/signin_internals_util.cc
index adae0a1e42dbd3a89b3940ca631d582c2fdcbe44..f18741866d3cf591ba78ff7a15f45d91415337be 100644
--- a/chrome/browser/signin/signin_internals_util.cc
+++ b/chrome/browser/signin/signin_internals_util.cc
@@ -98,11 +98,11 @@ std::string SigninStatusFieldToString(UntimedSigninStatusField field) {
     ENUM_CASE(LSID);
     case UNTIMED_FIELDS_END:
       NOTREACHED();
-      return "";
+      return std::string();
   }
 
   NOTREACHED();
-  return "";
+  return std::string();
 }
 
 std::string SigninStatusFieldToString(TimedSigninStatusField field) {
@@ -113,11 +113,11 @@ std::string SigninStatusFieldToString(TimedSigninStatusField field) {
     ENUM_CASE(GET_USER_INFO_STATUS);
     case TIMED_FIELDS_END:
       NOTREACHED();
-      return "";
+      return std::string();
   }
 
   NOTREACHED();
-  return "";
+  return std::string();
 }
 
 SigninStatus::SigninStatus()
@@ -203,10 +203,10 @@ std::string SigninStatusFieldToLabel(UntimedSigninStatusField field) {
       return "Sid (Hash)";
     case UNTIMED_FIELDS_END:
       NOTREACHED();
-      return "";
+      return std::string();
   }
   NOTREACHED();
-  return "";
+  return std::string();
 }
 
 TimedSigninStatusValue SigninStatusFieldToLabel(
@@ -226,10 +226,10 @@ TimedSigninStatusValue SigninStatusFieldToLabel(
                                     "Last OnGetUserInfo Time");
     case TIMED_FIELDS_END:
       NOTREACHED();
-      return TimedSigninStatusValue("Error", "");
+      return TimedSigninStatusValue("Error", std::string());
   }
   NOTREACHED();
-  return TimedSigninStatusValue("Error", "");
+  return TimedSigninStatusValue("Error", std::string());
 }
 
 } //  namespace