Support PermissionRequestManager for multiple download permissions on Android

chrome/browser/download/download_permission_request.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 CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PERMISSION_REQUEST_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PERMISSION_REQUEST_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/permissions/permission_request.h"
 
 // A permission request that presents the user with a choice to allow or deny
 // multiple downloads from the same site. This confirmation step protects
 // against "carpet-bombing", where a malicious site forces multiple downloads on
 // an unsuspecting user.
 class DownloadPermissionRequest : public PermissionRequest {
  public:
   explicit DownloadPermissionRequest(
       base::WeakPtr<DownloadRequestLimiter::TabDownloadState> host);
   ~DownloadPermissionRequest() override;
 
  private:
-  // PermissionBubbleDelegate:
+  // PermissionRequest:
   IconId GetIconId() const override;
+#if defined(OS_ANDROID)
+  base::string16 GetMessageText() const override;
+#endif
   base::string16 GetMessageTextFragment() const override;
   GURL GetOrigin() const override;
   void PermissionGranted() override;
   void PermissionDenied() override;
   void Cancelled() override;
   void RequestFinished() override;
   PermissionRequestType GetPermissionRequestType() const override;
 
   base::WeakPtr<DownloadRequestLimiter::TabDownloadState> host_;
   GURL request_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadPermissionRequest);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_PERMISSION_REQUEST_H_