Change the meaning of SelectFileDialog.support_drive: it means Drive-aware callers.

chrome/browser/ui/certificate_dialogs.cc

 // Copyright (c) 2012 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/ui/certificate_dialogs.h"
 
 
 #include <vector>
 
 #include "base/base64.h"
@@ skipping 152 matching lines @@
   file_type_info.extensions[2].push_back(FILE_PATH_LITERAL("der"));
   file_type_info.extension_description_overrides.push_back(
       l10n_util::GetStringUTF16(IDS_CERT_EXPORT_TYPE_DER));
   file_type_info.extensions[3].push_back(FILE_PATH_LITERAL("p7c"));
   file_type_info.extension_description_overrides.push_back(
       l10n_util::GetStringUTF16(IDS_CERT_EXPORT_TYPE_PKCS7));
   file_type_info.extensions[4].push_back(FILE_PATH_LITERAL("p7c"));
   file_type_info.extension_description_overrides.push_back(
       l10n_util::GetStringUTF16(IDS_CERT_EXPORT_TYPE_PKCS7_CHAIN));
   file_type_info.include_all_files = true;
-  // TODO(kinaba): http://crbug.com/140425. Turn file_type_info.support_drive
-  // on for saving once Google Drive client on ChromeOS supports it.
-  if (type == ui::SelectFileDialog::SELECT_OPEN_FILE)
-    file_type_info.support_drive = true;
   select_file_dialog->SelectFile(
       type, string16(),
-      suggested_path, &file_type_info, 1,
+      suggested_path, &file_type_info,
+      1,  // 1-based index for |file_type_info.extensions| to specify default.
       FILE_PATH_LITERAL("crt"),
       parent, params);
 }
 
 void ShowCertExportDialog(WebContents* web_contents,
                           gfx::NativeWindow parent,
                           net::X509Certificate::OSCertHandle cert) {
   new Exporter(web_contents, parent, cert);
 }