Random cleanup for c/b/cros/extensions/file_manager.

chrome/browser/chromeos/extensions/file_manager/private_api_tasks.cc

 // Copyright 2013 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/chromeos/extensions/file_manager/private_api_tasks.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 62 matching lines @@
 
   const scoped_refptr<fileapi::FileSystemContext> file_system_context =
       file_manager::util::GetFileSystemContextForRenderViewHost(
           GetProfile(), render_view_host());
 
   std::vector<FileSystemURL> file_urls;
   for (size_t i = 0; i < params->file_urls.size(); i++) {
     const FileSystemURL url =
         file_system_context->CrackURL(GURL(params->file_urls[i]));
     if (!chromeos::FileSystemBackend::CanHandleURL(url)) {
-      error_ = kInvalidFileUrl;
+      SetError(kInvalidFileUrl);
       return false;
     }
     file_urls.push_back(url);
   }
 
   return file_manager::file_tasks::ExecuteFileTask(
       GetProfile(),
       source_url(),
       task,
       file_urls,
@@ skipping 105 matching lines @@
     SetResult(new base::FundamentalValue(true));
     return true;
   }
 
   file_manager::file_tasks::UpdateDefaultTask(
       GetProfile()->GetPrefs(), params->task_id, suffixes, mime_types);
   return true;
 }
 
 }  // namespace extensions