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

chrome/browser/chromeos/file_system_provider/operations/get_metadata.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/get_metadata.h"
 
 #include <string>
 
 #include "chrome/common/extensions/api/file_system_provider.h"
 #include "chrome/common/extensions/api/file_system_provider_internal.h"
@@ skipping 30 matching lines @@
                          &output->last_modified);
 
   return true;
 }
 
 }  // namespace
 
 GetMetadata::GetMetadata(
     extensions::EventRouter* event_router,
     const ProvidedFileSystemInfo& file_system_info,
-    const base::FilePath& directory_path,
+    const base::FilePath& entry_path,
     const fileapi::AsyncFileUtil::GetFileInfoCallback& callback)
     : Operation(event_router, file_system_info),
-      directory_path_(directory_path),
+      entry_path_(entry_path),
       callback_(callback) {
 }
 
 GetMetadata::~GetMetadata() {
 }
 
 bool GetMetadata::Execute(int request_id) {
-  scoped_ptr<base::ListValue> values(new base::ListValue);
-  values->AppendString(directory_path_.AsUTF8Unsafe());
+  scoped_ptr<base::DictionaryValue> values(new base::DictionaryValue);
+  values->SetString("entryPath", entry_path_.AsUTF8Unsafe());
   return SendEvent(
       request_id,
       extensions::api::file_system_provider::OnGetMetadataRequested::kEventName,
       values.Pass());
 }
 
 void GetMetadata::OnSuccess(int /* request_id */,
                             scoped_ptr<RequestValue> result,
                             bool has_more) {
   base::File::Info file_info;
   const bool convert_result =
       ConvertRequestValueToFileInfo(result.Pass(), &file_info);
   DCHECK(convert_result);
   callback_.Run(base::File::FILE_OK, file_info);
 }
 
 void GetMetadata::OnError(int /* request_id */, base::File::Error error) {
   callback_.Run(error, base::File::Info());
 }
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos