Add the ability for objects which derive from RefCountedThreadSafe to specify...

chrome/browser/renderer_host/file_system_accessor.cc

-// Copyright (c) 2006-2009 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/renderer_host/file_system_accessor.h"
-
-#include "base/file_util.h"
-#include "base/message_loop.h"
-#include "chrome/browser/chrome_thread.h"
-
-FileSystemAccessor::FileSystemAccessor(void* param, FileSizeCallback* callback)
-    : param_(param), callback_(callback) {
-  caller_loop_ = MessageLoop::current();
-}
-
-FileSystemAccessor::~FileSystemAccessor() {
-}
-
-void FileSystemAccessor::RequestFileSize(const FilePath& path,
-                                         void* param,
-                                         FileSizeCallback* callback) {
-  // Getting file size could take long time if it lives on a network share,
-  // so run it on FILE thread.
-  ChromeThread::PostTask(
-      ChromeThread::FILE, FROM_HERE,
-      NewRunnableMethod(new FileSystemAccessor(param, callback),
-                        &FileSystemAccessor::GetFileSize, path));
-}
-
-void FileSystemAccessor::GetFileSize(const FilePath& path) {
-  int64 result;
-  // Set result to -1 if failed to get file size.
-  if (!file_util::GetFileSize(path, &result))
-    result = -1;
-
-  // Pass the result back to the caller thread.
-  caller_loop_->PostTask(
-    FROM_HERE,
-    NewRunnableMethod(this, &FileSystemAccessor::GetFileSizeCompleted, result));
-}
-
-void FileSystemAccessor::GetFileSizeCompleted(int64 result) {
-  callback_->Run(result, param_);
-}