chromium/chrome/browser/extensions/external_loader.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_LOADER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTERNAL_LOADER_H_

#include "base/files/file_path.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/values.h"

namespace extensions {
class ExternalProviderImpl;

// Base class for gathering a list of external extensions. Subclasses
// implement loading from registry, JSON file, policy.
// Instances are owned by ExternalProviderImpl objects.
// Instances are created on the UI thread and expect public method calls from
// the UI thread. Some subclasses introduce new methods that are executed on the
// FILE thread.
// The sequence of loading the extension list:
// 1.) StartLoading() - checks if a loading task is already running
// 2.) Load() - implemented in subclasses
// 3.) LoadFinished()
// 4.) owner_->SetPrefs()
class ExternalLoader : public base::RefCountedThreadSafe<ExternalLoader> { … };

}  // namespace extensions

#endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_LOADER_H_