[fsp] Group arguments for API methods and events in dictionaries.

chrome/browser/chromeos/file_system_provider/operations/open_file.cc

 // Copyright 2014 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/file_system_provider/operations/open_file.h"
 
 #include <string>
 
 #include "chrome/common/extensions/api/file_system_provider.h"
 #include "chrome/common/extensions/api/file_system_provider_internal.h"
@@ skipping 13 matching lines @@
       file_path_(file_path),
       mode_(mode),
       create_(create),
       callback_(callback) {
 }
 
 OpenFile::~OpenFile() {
 }
 
 bool OpenFile::Execute(int request_id) {
-  scoped_ptr<base::ListValue> values(new base::ListValue);
-  values->AppendString(file_path_.AsUTF8Unsafe());
+  scoped_ptr<base::DictionaryValue> values(new base::DictionaryValue);
+  values->SetString("filePath", file_path_.AsUTF8Unsafe());
 
   switch (mode_) {
     case ProvidedFileSystemInterface::OPEN_FILE_MODE_READ:
-      values->AppendString(extensions::api::file_system_provider::ToString(
-          extensions::api::file_system_provider::OPEN_FILE_MODE_READ));
+      values->SetString(
+          "mode",
+          extensions::api::file_system_provider::ToString(
+              extensions::api::file_system_provider::OPEN_FILE_MODE_READ));
       break;
     case ProvidedFileSystemInterface::OPEN_FILE_MODE_WRITE:
-      values->AppendString(extensions::api::file_system_provider::ToString(
-          extensions::api::file_system_provider::OPEN_FILE_MODE_WRITE));
+      values->SetString(
+          "mode",
+          extensions::api::file_system_provider::ToString(
+              extensions::api::file_system_provider::OPEN_FILE_MODE_WRITE));
       break;
   }
 
-  values->AppendBoolean(create_);
+  values->SetBoolean("create", create_);
 
   return SendEvent(
       request_id,
       extensions::api::file_system_provider::OnOpenFileRequested::kEventName,
       values.Pass());
 }
 
 void OpenFile::OnSuccess(int request_id,
                          scoped_ptr<RequestValue> result,
                          bool has_more) {
   // File handle is the same as request id of the OpenFile operation.
   callback_.Run(request_id, base::File::FILE_OK);
 }
 
 void OpenFile::OnError(int /* request_id */, base::File::Error error) {
   callback_.Run(0 /* file_handle */, error);
 }
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos