Adding WebContent-free Download

content/browser/download/url_downloader.h

+// 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.
+
+#ifndef CONTENT_BROWSER_DOWNLOAD_URL_DOWNLOADER_H_
+#define CONTENT_BROWSER_DOWNLOAD_URL_DOWNLOADER_H_
+
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/loader/resource_handler.h"
+#include "content/public/browser/download_save_info.h"
+#include "content/public/browser/download_url_parameters.h"
+#include "content/public/common/referrer.h"
+#include "net/url_request/url_request.h"
+
+namespace content {
+class DownloadManager;
+class ResourceContext;
+
+class UrlDownloader : public net::URLRequest::Delegate {
+ public:
+  UrlDownloader(scoped_ptr<net::URLRequest> request,
+                scoped_ptr<ResourceHandler> handler);
+  ~UrlDownloader() override;
+
+  static DownloadInterruptReason BeginDownload(
+      DownloadManager* download_manager,
+      scoped_ptr<net::URLRequest> request,
+      const Referrer& referrer,
+      bool is_content_initiated,
+      ResourceContext* context,
+      bool prefer_cache,
+      bool do_not_prompt_for_login,
+      scoped_ptr<DownloadSaveInfo> save_info,
+      uint32 download_id,
+      const DownloadUrlParameters::OnStartedCallback& started_callback);
+
+  void OnResponseStarted(net::URLRequest* request) override;

[asanka, 2015/11/20 19:57:46]

Add a comment noting that this is the URLRequest::Delegate implementation.

[svaldez, 2015/11/23 15:18:57]

Done.

+
+  void OnReadCompleted(net::URLRequest* request, int bytes_read) override;

[asanka, 2015/11/20 19:57:46]

We should also deal with OnReceivedRedirect() and prevent the request from
redirecting. URLDownloader doesn't have all the logic necessary to sanitize and
handle a redirect. Nor should we allow any redirects for a download resumption.

[svaldez, 2015/11/23 15:18:57]

Done.

+
+  void ResponseCompleted();
+  void StartReading(bool is_continuation);
+
+  void Start();
+
+ private:
+  scoped_ptr<net::URLRequest> request_;
+  scoped_ptr<ResourceHandler> handler_;
+
+  base::WeakPtrFactory<UrlDownloader> weak_ptr_factory_;
+};
+
+namespace {
+static std::vector<linked_ptr<content::UrlDownloader>> g_active_downloaders;
+}
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_DOWNLOAD_URL_DOWNLOADER_H_