[downloads] Move platform specific code out of DownloadTargetDeterminer.

chrome/browser/android/download/chrome_duplicate_download_infobar_delegate.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/chrome_duplicate_download_infobar_delegate.h"
 
 #include <memory>
 
 #include "base/android/path_utils.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/android/download/download_controller.h"
 #include "chrome/browser/download/download_path_reservation_tracker.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/ui/android/infobars/duplicate_download_infobar.h"
 #include "components/infobars/core/infobar.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace {
 
 void CreateNewFileDone(
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback,
-    const base::FilePath& target_path, bool verified) {
+    const DownloadTargetDeterminerDelegate::ConfirmationCallback& callback,
+    PathValidationResult result,
+    const base::FilePath& target_path) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  if (verified)
-    callback.Run(target_path);
+  if (result == PathValidationResult::SUCCESS)
+    callback.Run(DownloadConfirmationResult::CONFIRMED, target_path);
   else
-    callback.Run(base::FilePath());
+    callback.Run(DownloadConfirmationResult::FAILED, base::FilePath());
 }
 
 }  // namespace
 
 namespace chrome {
 namespace android {
 
 ChromeDuplicateDownloadInfoBarDelegate::
     ~ChromeDuplicateDownloadInfoBarDelegate() {
   if (download_item_)
     download_item_->RemoveObserver(this);
 }
 
 // static
 void ChromeDuplicateDownloadInfoBarDelegate::Create(
     InfoBarService* infobar_service,
     content::DownloadItem* download_item,
     const base::FilePath& file_path,
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback& callback) {
+    const DownloadTargetDeterminerDelegate::ConfirmationCallback& callback) {
   infobar_service->AddInfoBar(DuplicateDownloadInfoBar::CreateInfoBar(
       base::WrapUnique(new ChromeDuplicateDownloadInfoBarDelegate(
           download_item, file_path, callback))));
 }
 
 void ChromeDuplicateDownloadInfoBarDelegate::OnDownloadDestroyed(
     content::DownloadItem* download_item) {
   DCHECK_EQ(download_item, download_item_);
   download_item_ = nullptr;
 }
 
 ChromeDuplicateDownloadInfoBarDelegate::ChromeDuplicateDownloadInfoBarDelegate(
     content::DownloadItem* download_item,
     const base::FilePath& file_path,
-    const DownloadTargetDeterminerDelegate::FileSelectedCallback&
+    const DownloadTargetDeterminerDelegate::ConfirmationCallback&
         file_selected_callback)
     : download_item_(download_item),
       file_path_(file_path),
       is_off_the_record_(download_item->GetBrowserContext()->IsOffTheRecord()),
       file_selected_callback_(file_selected_callback) {
   download_item_->AddObserver(this);
 }
 
 infobars::InfoBarDelegate::InfoBarIdentifier
 ChromeDuplicateDownloadInfoBarDelegate::GetIdentifier() const {
@@ skipping 15 matching lines @@
       true,
       DownloadPathReservationTracker::UNIQUIFY,
       base::Bind(&CreateNewFileDone, file_selected_callback_));
   return true;
 }
 
 bool ChromeDuplicateDownloadInfoBarDelegate::Cancel() {
   if (!download_item_)
     return true;
 
-  file_selected_callback_.Run(base::FilePath());
+  file_selected_callback_.Run(DownloadConfirmationResult::CANCELED,
+                              base::FilePath());
   // TODO(qinmin): rename this histogram enum.
   DownloadController::RecordDownloadCancelReason(
       DownloadController::CANCEL_REASON_OVERWRITE_INFOBAR_DISMISSED);
   return true;
 }
 
 std::string ChromeDuplicateDownloadInfoBarDelegate::GetFilePath() const {
   return file_path_.value();
 }
 
 void ChromeDuplicateDownloadInfoBarDelegate::InfoBarDismissed() {
   Cancel();
 }
 
 bool ChromeDuplicateDownloadInfoBarDelegate::IsOffTheRecord() const {
   return is_off_the_record_;
 }
 
 }  // namespace android
 }  // namespace chrome