remove DownloadController::SetDefaultDownloadFileName()

chrome/browser/android/download/download_controller.cc

 // 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.
 
 #include "chrome/browser/android/download/download_controller.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/android/context_utils.h"
@@ skipping 199 matching lines @@
         BrowserThread::UI, FROM_HERE, base::Bind(cb, true));
     return;
   }
   // Make copy on the heap so we can pass the pointer through JNI.
   intptr_t callback_id = reinterpret_cast<intptr_t>(
       new DownloadControllerBase::AcquireFileAccessPermissionCallback(cb));
   ChromeDownloadDelegate::FromWebContents(web_contents)->
       RequestFileAccess(callback_id);
 }
 
-void DownloadController::SetDefaultDownloadFileName(
-    const std::string& file_name) {
-  default_file_name_ = file_name;
-}
-
 bool DownloadController::HasFileAccessPermission(
     ui::WindowAndroid* window_android) {
   ScopedJavaLocalRef<jobject> jwindow_android = window_android->GetJavaObject();
 
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(!jwindow_android.is_null());
 
   JNIEnv* env = base::android::AttachCurrentThread();
   return Java_DownloadController_hasFileAccess(
       env, GetJavaObject()->Controller(env), jwindow_android);
@@ skipping 132 matching lines @@
   if (!item)
     return;
   if (accept) {
     item->ValidateDangerousDownload();
   } else {
     DownloadController::RecordDownloadCancelReason(
         DownloadController::CANCEL_REASON_DANGEROUS_DOWNLOAD_INFOBAR_DISMISSED);
     item->Remove();
   }
 }