[fsp] Group arguments for mounting into a struct.

chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.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_system_provider/file_system_provider_api.h"
 
 #include <string>
 #include <vector>
 
 #include "base/debug/trace_event.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/file_system_provider/provided_file_system_interface.h"
 #include "chrome/browser/chromeos/file_system_provider/request_manager.h"
 #include "chrome/browser/chromeos/file_system_provider/request_value.h"
 #include "chrome/browser/chromeos/file_system_provider/service.h"
 #include "chrome/common/extensions/api/file_system_provider.h"
 #include "chrome/common/extensions/api/file_system_provider_internal.h"
 
+using chromeos::file_system_provider::MountOptions;
 using chromeos::file_system_provider::ProvidedFileSystemInfo;
 using chromeos::file_system_provider::ProvidedFileSystemInterface;
 using chromeos::file_system_provider::RequestValue;
 using chromeos::file_system_provider::Service;
 
 namespace extensions {
 namespace {
 
 const char kNotifyFailedErrorMessage[] =
     "Sending a response for the request failed.";
@@ skipping 21 matching lines @@
                                kEmptyNameErrorMessage));
     SetResult(result);
     return true;
   }
 
   Service* const service = Service::Get(GetProfile());
   DCHECK(service);
   if (!service)
     return false;
 
+  MountOptions options;
+  options.file_system_id = params->options.file_system_id;
+  options.display_name = params->options.display_name;
+  options.writable = params->options.writable;
+  options.supports_notify_tag = params->options.supports_notify_tag;
+
   // TODO(mtomasz): Pass more detailed errors, rather than just a bool.
-  if (!service->MountFileSystem(extension_id(),
-                                params->options.file_system_id,
-                                params->options.display_name,
-                                params->options.writable,
-                                params->options.supports_notify_tag)) {
+  if (!service->MountFileSystem(extension_id(), options)) {
     base::ListValue* const result = new base::ListValue();
     result->Append(CreateError(kSecurityErrorName, kMountFailedErrorMessage));
     SetResult(result);
     return true;
   }
 
   base::ListValue* result = new base::ListValue();
   SetResult(result);
   return true;
 }
@@ skipping 151 matching lines @@
   using api::file_system_provider_internal::OperationRequestedError::Params;
   scoped_ptr<Params> params(Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params);
 
   const base::File::Error error = ProviderErrorToFileError(params->error);
   RejectRequest(RequestValue::CreateForOperationError(params.Pass()), error);
   return true;
 }
 
 }  // namespace extensions