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

chrome/browser/policy/cloud/mock_device_management_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/policy/cloud/mock_device_management_service.h"
 
 #include "base/string_util.h"
 
 using testing::Action;
 
@@ skipping 98 matching lines @@
 
 ACTION_P2(CreateAsyncMockDeviceManagementJob, service, mock_job) {
   AsyncRequestJob* job = new AsyncRequestJob(arg0, service);
   *mock_job = job;
   return job;
 }
 
 MockDeviceManagementJob::~MockDeviceManagementJob() {}
 
 MockDeviceManagementService::MockDeviceManagementService()
-    : DeviceManagementService("") {}
+    : DeviceManagementService(std::string()) {}
 
 MockDeviceManagementService::~MockDeviceManagementService() {}
 
 Action<MockDeviceManagementService::CreateJobFunction>
     MockDeviceManagementService::SucceedJob(
         const em::DeviceManagementResponse& response) {
   return CreateSyncMockDeviceManagementJob(this, DM_STATUS_SUCCESS, response);
 }
 
 Action<MockDeviceManagementService::CreateJobFunction>
     MockDeviceManagementService::FailJob(DeviceManagementStatus status) {
   const em::DeviceManagementResponse dummy_response;
   return CreateSyncMockDeviceManagementJob(this, status, dummy_response);
 }
 
 Action<MockDeviceManagementService::CreateJobFunction>
     MockDeviceManagementService::CreateAsyncJob(MockDeviceManagementJob** job) {
   return CreateAsyncMockDeviceManagementJob(this, job);
 }
 
 }  // namespace policy