[cros] disable GDrive option on certain file pickers

chrome/browser/download/save_package_file_picker_chromeos.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/download/save_package_file_picker_chromeos.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/file_util_icu.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 27 matching lines @@
 
 SavePackageFilePickerChromeOS::SavePackageFilePickerChromeOS(
     content::WebContents* web_contents,
     const FilePath& suggested_path,
     const content::SavePackagePathPickedCallback& callback)
     : content::WebContentsObserver(web_contents),
       callback_(callback) {
   if (g_should_prompt_for_filename) {
     select_file_dialog_ = ui::SelectFileDialog::Create(
         this, new ChromeSelectFilePolicy(web_contents));
+    ui::SelectFileDialog::FileTypeInfo file_types;
+    file_types.support_gdata = true;
     select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_SAVEAS_FILE,
                                     string16(),
                                     suggested_path.ReplaceExtension("mhtml"),
-                                    NULL,
+                                    &file_types,
                                     0,
                                     "mhtml",
                                     platform_util::GetTopLevel(
                                         web_contents->GetNativeView()),
                                     NULL);
   } else {
     FileSelected(suggested_path.ReplaceExtension("mhtml"), 0, NULL);
   }
 }
 
@@ skipping 40 matching lines @@
   } else {
     callback_.Run(selected_path, content::SAVE_PAGE_TYPE_AS_MHTML,
                   content::SavePackageDownloadCreatedCallback());
   }
   delete this;
 }
 
 void SavePackageFilePickerChromeOS::FileSelectionCanceled(void* params) {
   delete this;
 }