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

chrome/browser/sync/profile_sync_service_session_unittest.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 <map>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
@@ skipping 67 matching lines @@
       ProfileSyncService::StartBehavior behavior,
       bool synchronous_backend_initialization)
       : TestProfileSyncService(factory,
                                profile,
                                signin,
                                behavior,
                                synchronous_backend_initialization) {}
   virtual ~FakeProfileSyncService() {}
 
   virtual scoped_ptr<DeviceInfo> GetLocalDeviceInfo() const OVERRIDE {
-    return scoped_ptr<DeviceInfo>(
-        new DeviceInfo("client_name", "", "", sync_pb::SyncEnums::TYPE_WIN));
+    return scoped_ptr<DeviceInfo>(new DeviceInfo("client_name",
+                                                 std::string(),
+                                                 std::string(),
+                                                 sync_pb::SyncEnums::TYPE_WIN));
   }
 };
 
 void BuildSessionSpecifics(const std::string& tag,
                            sync_pb::SessionSpecifics* meta) {
   meta->set_session_tag(tag);
   sync_pb::SessionHeader* header = meta->mutable_header();
   header->set_device_type(sync_pb::SyncEnums_DeviceType_TYPE_LINUX);
   header->set_client_name("name");
 }
@@ skipping 1144 matching lines @@
     sync_pb::SessionSpecifics specifics;
     header.SetSessionSpecifics(specifics);
   }
   // Ensure we associate properly despite the pre-existing node with our local
   // tag.
   error = model_associator_->AssociateModels(NULL, NULL);
   ASSERT_FALSE(error.IsSet());
 }
 
 }  // namespace browser_sync