Handle early pause, cancel for parallel requests.

content/browser/download/download_job_impl.cc

 // Copyright 2017 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 "content/browser/download/download_job_impl.h"
 
 #include "content/public/browser/web_contents.h"
 
 namespace content {
 
 DownloadJobImpl::DownloadJobImpl(
     DownloadItemImpl* download_item,
     std::unique_ptr<DownloadRequestHandleInterface> request_handle)
     : DownloadJob(download_item), request_handle_(std::move(request_handle)) {}
 
 DownloadJobImpl::~DownloadJobImpl() = default;
 
 void DownloadJobImpl::Start() {
   DownloadJob::StartDownload();
 }
 
 void DownloadJobImpl::Cancel(bool user_cancel) {
+  DownloadJob::Cancel(user_cancel);
+
   if (request_handle_)
     request_handle_->CancelRequest();
 }
 
 void DownloadJobImpl::Pause() {
   DownloadJob::Pause();
   if (request_handle_)
     request_handle_->PauseRequest();
 }
 
 void DownloadJobImpl::Resume(bool resume_request) {
   DownloadJob::Resume(resume_request);
   if (!resume_request)
     return;
 
   if (request_handle_)
     request_handle_->ResumeRequest();
 }
 
 WebContents* DownloadJobImpl::GetWebContents() const {
   return request_handle_ ? request_handle_->GetWebContents() : nullptr;
 }
 
 }  // namespace content