[FileAPI] Replace default leveldb::Env with leveldb::MemEnv in tests.

content/browser/fileapi/browser_file_system_helper.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 "content/browser/fileapi/browser_file_system_helper.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 24 matching lines @@
   FileSystemOptions::ProfileMode profile_mode =
       is_incognito ? FileSystemOptions::PROFILE_MODE_INCOGNITO
                    : FileSystemOptions::PROFILE_MODE_NORMAL;
   std::vector<std::string> additional_allowed_schemes;
   GetContentClient()->browser()->GetAdditionalAllowedSchemesForFileSystem(
       &additional_allowed_schemes);
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAllowFileAccessFromFiles)) {
     additional_allowed_schemes.push_back(kFileScheme);
   }
-  return FileSystemOptions(profile_mode, additional_allowed_schemes);
+  return FileSystemOptions(profile_mode, additional_allowed_schemes, NULL);
 }
 
 }  // namespace
 
 scoped_refptr<fileapi::FileSystemContext> CreateFileSystemContext(
     BrowserContext* browser_context,
     const base::FilePath& profile_path,
     bool is_incognito,
     quota::QuotaManagerProxy* quota_manager_proxy) {
 
@@ skipping 65 matching lines @@
   context->operation_runner()->SyncGetPlatformPath(url, platform_path);
 
   // The path is to be attached to URLLoader so we grant read permission
   // for the file. (We need to check first because a parent directory may
   // already have the permissions and we don't need to grant it to the file.)
   if (!policy->CanReadFile(process_id, *platform_path))
     policy->GrantReadFile(process_id, *platform_path);
 }
 
 }  // namespace content