[fsp] Implement storage::WatcherManager for FSP.

chrome/browser/chromeos/file_system_provider/fileapi/backend_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/fileapi/file_system_backend_delegate.h"
 
 namespace storage {
 class AsyncFileUtil;
 class FileSystemContext;
 class FileStreamReader;
 class FileSystemURL;
 class FileStreamWriter;
 class WatcherManager;
 }  // namespace storage
 
 namespace chromeos {
 namespace file_system_provider {
 
+class WatcherManager;

[fukino, 2014/10/30 03:42:32]

This is not necessary?

[mtomasz, 2014/10/30 09:50:32]

Done.

+
 // Delegate implementation of the some methods in chromeos::FileSystemBackend
 // for provided file systems.
 class BackendDelegate : public chromeos::FileSystemBackendDelegate {
  public:
   BackendDelegate();
   virtual ~BackendDelegate();
 
   // FileSystemBackend::Delegate overrides.
   virtual storage::AsyncFileUtil* GetAsyncFileUtil(
       storage::FileSystemType type) override;
   virtual scoped_ptr<storage::FileStreamReader> CreateFileStreamReader(
       const storage::FileSystemURL& url,
       int64 offset,
       int64 max_bytes_to_read,
       const base::Time& expected_modification_time,
       storage::FileSystemContext* context) override;
   virtual scoped_ptr<storage::FileStreamWriter> CreateFileStreamWriter(
       const storage::FileSystemURL& url,
       int64 offset,
       storage::FileSystemContext* context) override;
   virtual storage::WatcherManager* GetWatcherManager(
       const storage::FileSystemURL& url) override;
   virtual void GetRedirectURLForContents(
       const storage::FileSystemURL& url,
       const storage::URLCallback& callback) override;
 
  private:
   scoped_ptr<storage::AsyncFileUtil> async_file_util_;
+  scoped_ptr<storage::WatcherManager> watcher_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(BackendDelegate);
 };
 
 }  // namespace file_system_provider
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_FILEAPI_BACKEND_DELEGATE_H_