Move DownloadControllerAndroid from content/ to chrome/

chrome/browser/android/download/download_controller_base.h

+// Copyright 2016 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 CHROME_BROWSER_ANDROID_DOWNLOAD_DOWNLOAD_CONTROLLER_BASE_H_
+#define CHROME_BROWSER_ANDROID_DOWNLOAD_DOWNLOAD_CONTROLLER_BASE_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "content/public/browser/download_item.h"
+#include "content/public/common/context_menu_params.h"
+#include "net/http/http_content_disposition.h"
+#include "net/http/http_request_headers.h"
+#include "net/http/http_response_headers.h"
+#include "url/gurl.h"
+
+namespace net {
+class URLRequest;
+}
+
+namespace content {
+class DownloadItem;
+class WebContents;
+}
+
+// Used to store all the information about an Android download.
+struct DownloadInfo {
+  explicit DownloadInfo(const net::URLRequest* request);
+  DownloadInfo(const DownloadInfo& other);
+  ~DownloadInfo();
+
+  // The URL from which we are downloading. This is the final URL after any
+  // redirection by the server for |original_url_|.
+  GURL url;
+  // The original URL before any redirection by the server for this URL.
+  GURL original_url;
+  int64_t total_bytes;
+  std::string content_disposition;
+  std::string original_mime_type;
+  std::string user_agent;
+  std::string cookie;
+  std::string referer;
+  bool has_user_gesture;
+
+  content::WebContents* web_contents;
+  // Default copy constructor is used for passing this struct by value.
+};
+
+// Interface to request GET downloads and send notifications for POST
+// downloads.
+class DownloadControllerBase : public content::DownloadItem::Observer {
+ public:
+  // Returns the singleton instance of the DownloadControllerBase.
+  static DownloadControllerBase* Get();
+
+  // Called to set the DownloadControllerBase instance.
+  static void SetDownloadControllerBase(
+      DownloadControllerBase* download_controller);
+
+  // Starts a new download request with Android. Should be called on the
+  // UI thread.
+  virtual void CreateGETDownload(int render_process_id, int render_view_id,
+                                 bool must_download,
+                                 const DownloadInfo& info) = 0;
+
+  // Should be called when a download is started. It can be either a GET
+  // request with authentication or a POST request. Notifies the embedding
+  // app about the download. Should be called on the UI thread.
+  virtual void OnDownloadStarted(content::DownloadItem* download_item) = 0;
+
+  // Called when a download is initiated by context menu.
+  virtual void StartContextMenuDownload(
+      const content::ContextMenuParams& params,
+      content::WebContents* web_contents,
+      bool is_link, const std::string& extra_headers) = 0;
+
+  // Called when a dangerous download item is verified or rejected.
+  virtual void DangerousDownloadValidated(content::WebContents* web_contents,
+                                          const std::string& download_guid,
+                                          bool accept) = 0;
+
+  // Callback when user permission prompt finishes. Args: whether file access
+  // permission is acquired.
+  typedef base::Callback<void(bool)> AcquireFileAccessPermissionCallback;
+
+  // Called to prompt the user for file access permission. When finished,
+  // |callback| will be executed.
+  virtual void AcquireFileAccessPermission(
+      content::WebContents* web_contents,
+      const AcquireFileAccessPermissionCallback& callback) = 0;
+
+  // Called by unit test to approve or disapprove file access request.
+  virtual void SetApproveFileAccessRequestForTesting(bool approve) {}
+
+  // Called to set the default download file name if it cannot be resolved
+  // from url and content disposition
+  virtual void SetDefaultDownloadFileName(const std::string& file_name) {}
+
+ protected:
+  ~DownloadControllerBase() override {}
+  static DownloadControllerBase* download_controller_;
+};
+
+#endif  // CHROME_BROWSER_ANDROID_DOWNLOAD_DOWNLOAD_CONTROLLER_BASE_H_