Upstream Chrome on iOS source code [4/11].

ios/chrome/browser/ui/downloads/download_manager_controller.h

+// Copyright 2014 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 IOS_CHROME_BROWSER_UI_DOWNLOADS_DOWNLOAD_MANAGER_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_UI_DOWNLOADS_DOWNLOAD_MANAGER_CONTROLLER_H_
+
+#import <UIKit/UIKit.h>
+
+#import "ios/chrome/browser/ui/native_content_controller.h"
+
+@protocol StoreKitLauncher;
+
+namespace net {
+class URLRequestContextGetter;
+}
+
+// This controller shows the native download manager. It shows the user basic
+// information about the file (namely its type, size, and name), and gives them
+// the option to download it and open it in another app. This controller is
+// displayed when a URL is loaded that contains a file type that UIWebView
+// cannot display itself.
+@interface DownloadManagerController
+    : NativeContentController<UIDocumentInteractionControllerDelegate>
+
+// Initializes a controller for content from |url|, using
+// |requestContextGetter| for all requests necessary to download the file.
+// |storeLauncher| is used to open a controller that allows the user to
+// install Google Drive if they don't have it installed.
+- (id)initWithURL:(const GURL&)url
+    requestContextGetter:(net::URLRequestContextGetter*)requestContextGetter
+        storeKitLauncher:(id<StoreKitLauncher>)storeLauncher;
+
+// Starts loading the data for the file at the url passed into the
+// initializer. This should only be called once, immediately after
+// initialization.
+- (void)start;
+
+// Deletes the directory in which downloaded files are saved. It should only be
+// called on the UI thread.
++ (void)clearDownloadsDirectory;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_DOWNLOADS_DOWNLOAD_MANAGER_CONTROLLER_H_