Fix remaining incompatibilities between scoped_ptr and unique_ptr.

chrome/browser/extensions/api/file_system/file_system_api.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/extensions/api/file_system/file_system_api.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <vector>
@@ skipping 1045 matching lines @@
   scoped_ptr<ChooseEntry::Params> params(ChooseEntry::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   base::FilePath suggested_name;
   ui::SelectFileDialog::FileTypeInfo file_type_info;
   ui::SelectFileDialog::Type picker_type =
       ui::SelectFileDialog::SELECT_OPEN_FILE;
 
   file_system::ChooseEntryOptions* options = params->options.get();
   if (options) {
-    multiple_ = options->accepts_multiple;
+    multiple_ = !!options->accepts_multiple;
     if (multiple_)
       picker_type = ui::SelectFileDialog::SELECT_OPEN_MULTI_FILE;
 
     if (options->type == file_system::CHOOSE_ENTRY_TYPE_OPENWRITABLEFILE &&
         !app_file_handler_util::HasFileSystemWritePermission(
             extension_.get())) {
       error_ = kRequiresFileSystemWriteError;
       return false;
     } else if (options->type == file_system::CHOOSE_ENTRY_TYPE_SAVEFILE) {
       if (!app_file_handler_util::HasFileSystemWritePermission(
@@ skipping 380 matching lines @@
   using api::file_system::Volume;
   std::vector<linked_ptr<Volume>> result_volume_list;
   FillVolumeList(chrome_details_.GetProfile(), &result_volume_list);
 
   return RespondNow(ArgumentList(
       api::file_system::GetVolumeList::Results::Create(result_volume_list)));
 }
 #endif
 
 }  // namespace extensions