Convert WindowOpenDisposition to an enum class.

chrome/browser/download/download_commands.cc

 // Copyright 2015 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_commands.h"
 
 #include <stdint.h>
 
 #include "base/base64.h"
 #include "base/files/file_util.h"
@@ skipping 325 matching lines @@
                                                    GetBrowser());
 #else
       // Should only be getting invoked if we are using safe browsing.
       NOTREACHED();
 #endif
       break;
     }
     case LEARN_MORE_INTERRUPTED:
       GetBrowser()->OpenURL(content::OpenURLParams(
           GetLearnMoreURLForInterruptedDownload(), content::Referrer(),
-          NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK, false));
+          WindowOpenDisposition::NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK,
+          false));
       break;
     case PAUSE:
       download_item_->Pause();
       break;
     case RESUME:
       download_item_->Resume();
       break;
     case COPY_TO_CLIPBOARD:
       CopyFileAsImageToClipboard();
       break;
@@ skipping 44 matching lines @@
       download_item_->GetReceivedBytes() > kMaxImageClipboardSize) {
     return;
   }
 
   if (!DownloadItemModel(download_item_).HasSupportedImageMimeType())
     return;
 
   base::FilePath file_path = download_item_->GetFullPath();
   ImageClipboardCopyManager::Start(file_path);
 }