[cros] disable GDrive option on certain file pickers

ui/base/dialogs/select_file_dialog_win.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 "ui/base/dialogs/select_file_dialog_win.h"
 
 #include <windows.h>
 #include <commdlg.h>
 #include <shlobj.h>
 
@@ skipping 108 matching lines @@
 std::wstring FormatFilterForExtensions(
     const std::vector<std::wstring>& file_ext,
     const std::vector<std::wstring>& ext_desc,
     bool include_all_files) {
   const std::wstring all_ext = L"*.*";
   const std::wstring all_desc =
       l10n_util::GetStringUTF16(IDS_APP_SAVEAS_ALL_FILES);
 
   DCHECK(file_ext.size() >= ext_desc.size());
 
+  if (file_ext.empty())
+    include_all_files = true;
+
   std::wstring result;
 
   for (size_t i = 0; i < file_ext.size(); ++i) {
     std::wstring ext = file_ext[i];
     std::wstring desc;
     if (i < ext_desc.size())
       desc = ext_desc[i];
 
     if (ext.empty()) {
       // Force something reasonable to appear in the dialog box if there is no
@@ skipping 295 matching lines @@
                         void* params)
         : type(type),
           title(title),
           default_path(default_path),
           file_type_index(file_type_index),
           default_extension(default_extension),
           run_state(run_state),
           ui_proxy(MessageLoopForUI::current()->message_loop_proxy()),
           owner(owner),
           params(params) {
-      if (file_types) {
+      if (file_types)
         this->file_types = *file_types;
-      } else {
-        this->file_types.include_all_files = true;
-      }
     }
     SelectFileDialog::Type type;
     std::wstring title;
     FilePath default_path;
     FileTypeInfo file_types;
     int file_type_index;
     std::wstring default_extension;
     RunState run_state;
     scoped_refptr<base::MessageLoopProxy> ui_proxy;
     HWND owner;
@@ skipping 396 matching lines @@
   return return_value;
 }
 
 SelectFileDialog* CreateWinSelectFileDialog(
     SelectFileDialog::Listener* listener,
     SelectFilePolicy* policy) {
   return new SelectFileDialogImpl(listener, policy);
 }
 
 }  // namespace ui