Retry uploading in UploadJobImpl when error occurs

chrome/browser/chromeos/policy/remote_commands/screenshot_delegate.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/screenshot_delegate.h"
 
 #include "base/memory/ptr_util.h"
+#include "base/thread_task_runner_handle.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
 #include "chrome/browser/chromeos/policy/device_cloud_policy_manager_chromeos.h"
 #include "chrome/browser/chromeos/policy/status_uploader.h"
 #include "chrome/browser/chromeos/policy/upload_job_impl.h"
 #include "chrome/browser/chromeos/settings/device_oauth2_token_service.h"
 #include "chrome/browser/chromeos/settings/device_oauth2_token_service_factory.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace policy {
@@ skipping 34 matching lines @@
   chromeos::DeviceOAuth2TokenService* device_oauth2_token_service =
       chromeos::DeviceOAuth2TokenServiceFactory::Get();
 
   scoped_refptr<net::URLRequestContextGetter> system_request_context =
       g_browser_process->system_request_context();
   std::string robot_account_id =
       device_oauth2_token_service->GetRobotAccountId();
   return std::unique_ptr<UploadJob>(new UploadJobImpl(
       upload_url, robot_account_id, device_oauth2_token_service,
       system_request_context, delegate,
-      base::WrapUnique(new UploadJobImpl::RandomMimeBoundaryGenerator)));
+      base::WrapUnique(new UploadJobImpl::RandomMimeBoundaryGenerator),
+      base::ThreadTaskRunnerHandle::Get()));

[Andrew T Wilson (Slow), 2016/05/02 09:15:49]

Why do we use this instead of blocking_task_runner_?

[Marton Hunyady, 2016/05/04 11:26:41]

blocking_task_runner_ is used to store the screenshot on the disk, so it belongs
to the IO thread.

 }
 
 void ScreenshotDelegate::StoreScreenshot(
     const ui::GrabWindowSnapshotAsyncPNGCallback& callback,
     scoped_refptr<base::RefCountedBytes> png_data) {
   callback.Run(png_data);
 }
 
 }  // namespace policy