Remove some dead code for permission bubbles.

chrome/browser/download/download_permission_request.cc

 // 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.
 
 #include "chrome/browser/download/download_permission_request.h"
 
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 DownloadPermissionRequest::DownloadPermissionRequest(
     base::WeakPtr<DownloadRequestLimiter::TabDownloadState> host)
     : host_(host) {
   const content::WebContents* web_contents = host_->web_contents();
   DCHECK(web_contents);
   request_origin_ = web_contents->GetURL().GetOrigin();
 }
 
 DownloadPermissionRequest::~DownloadPermissionRequest() {}
 
 int DownloadPermissionRequest::GetIconId() const {
   return IDR_INFOBAR_MULTIPLE_DOWNLOADS;
 }
 
-base::string16 DownloadPermissionRequest::GetMessageText() const {
-  return l10n_util::GetStringUTF16(IDS_MULTI_DOWNLOAD_WARNING);
-}
-
 base::string16 DownloadPermissionRequest::GetMessageTextFragment() const {
   return l10n_util::GetStringUTF16(IDS_MULTI_DOWNLOAD_PERMISSION_FRAGMENT);
 }
 
 GURL DownloadPermissionRequest::GetOrigin() const {
   return request_origin_;
 }
 
 void DownloadPermissionRequest::PermissionGranted() {
   if (host_) {
@@ skipping 17 matching lines @@
 }
 
 void DownloadPermissionRequest::RequestFinished() {
   delete this;
 }
 
 PermissionBubbleType DownloadPermissionRequest::GetPermissionBubbleType()
     const {
   return PermissionBubbleType::DOWNLOAD;
 }