Fix build warning in device_command_screenshot_job.cc

chrome/browser/chromeos/policy/remote_commands/device_command_screenshot_job.cc

 // Copyright 2015 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/chromeos/policy/remote_commands/device_command_screenshot_job.h"
 
 #include <fstream>
 
 #include "ash/shell.h"
 #include "base/bind.h"
@@ skipping 95 matching lines @@
 }
 
 void DeviceCommandScreenshotJob::OnSuccess() {
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(succeeded_callback_,
                  base::Passed(make_scoped_ptr(new Payload(SUCCESS)))));
 }
 
 void DeviceCommandScreenshotJob::OnFailure(UploadJob::ErrorCode error_code) {
-  ResultCode result_code;
+  ResultCode result_code = FAILURE_CLIENT;
   switch (error_code) {
     case UploadJob::AUTHENTICATION_ERROR:
       result_code = FAILURE_AUTHENTICATION;
       break;
     case UploadJob::NETWORK_ERROR:
     case UploadJob::SERVER_ERROR:
       result_code = FAILURE_SERVER;
       break;
     case UploadJob::CONTENT_ENCODING_ERROR:
       result_code = FAILURE_CLIENT;
@@ skipping 107 matching lines @@
                               weak_ptr_factory_.GetWeakPtr(), screen),
                    base::ThreadTaskRunnerHandle::Get()));
   }
 }
 
 void DeviceCommandScreenshotJob::TerminateImpl() {
   weak_ptr_factory_.InvalidateWeakPtrs();
 }
 
 }  // namespace policy