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

chrome/browser/sync/profile_sync_service.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/sync/profile_sync_service.h"
 
 #include <cstddef>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 708 matching lines @@
   unrecoverable_error_reason_ = ERROR_REASON_UNSET;
   unrecoverable_error_message_.clear();
   unrecoverable_error_location_ = tracked_objects::Location();
 }
 
 // static
 // TODO(sync): Consider having syncer::Experiments provide this.
 std::string ProfileSyncService::GetExperimentNameForDataType(
     syncer::ModelType data_type) {
   NOTREACHED();
-  return "";
+  return std::string();
 }
 
 void ProfileSyncService::RegisterNewDataType(syncer::ModelType data_type) {
   if (data_type_controllers_.count(data_type) > 0)
     return;
   NOTREACHED();
 }
 
 // An invariant has been violated.  Transition to an error state where we try
 // to do as little work as possible, to avoid further corruption or crashes.
@@ skipping 1288 matching lines @@
   // See http://stackoverflow.com/questions/6224121/is-new-this-myclass-undefined-behaviour-after-directly-calling-the-destru.
   ProfileSyncService* old_this = this;
   this->~ProfileSyncService();
   new(old_this) ProfileSyncService(
       new ProfileSyncComponentsFactoryImpl(profile,
                                            CommandLine::ForCurrentProcess()),
       profile,
       signin,
       behavior);
 }