Support removeRecursively and new copy/move behaviors for FileSystem API

base/file_util_proxy.h

 // Copyright (c) 2010 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 BASE_FILE_UTIL_PROXY_H_
 #define BASE_FILE_UTIL_PROXY_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 71 matching lines @@
        >::Type ReadDirectoryCallback;
   static bool ReadDirectory(scoped_refptr<MessageLoopProxy> message_loop_proxy,
                             const FilePath& file_path,
                             ReadDirectoryCallback* callback);
 
   // Copies a file or a directory from |src_file_path| to |dest_file_path|
   // Error cases:
   // If destination file doesn't exist or destination's parent
   // doesn't exists.
   // If source dir exists but destination path is an existing file.
+  // If source file exists but destination path is an existing directory.
   // If source is a parent of destination.
   // If source doesn't exists.
   static bool Copy(scoped_refptr<MessageLoopProxy> message_loop_proxy,
                    const FilePath& src_file_path,
                    const FilePath& dest_file_path,
                    StatusCallback* callback);
 
   // Creates directory at given path. It's an error to create
   // if |exclusive| is true and dir already exists.
   static bool CreateDirectory(
       scoped_refptr<MessageLoopProxy> message_loop_proxy,
       const FilePath& file_path,
       bool exclusive,
       bool recursive,
       StatusCallback* callback);
 
-  // Deletes a file or empty directory.
+  // Deletes a file or a directory.
+  // It is an error to delete a non-empty directory with recursive=false.
   static bool Delete(scoped_refptr<MessageLoopProxy> message_loop_proxy,
                      const FilePath& file_path,
+                     bool recursive,
                      StatusCallback* callback);
 
   // Moves a file or a directory from src_file_path to dest_file_path.
   // Error cases are similar to Copy method's error cases.
   static bool Move(
       scoped_refptr<MessageLoopProxy> message_loop_proxy,
       const FilePath& src_file_path,
       const FilePath& dest_file_path,
       StatusCallback* callback);
 
@@ skipping 57 matching lines @@
       base::PlatformFile file,
       StatusCallback* callback);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileUtilProxy);
 };
 
 }  // namespace base
 
 #endif  // BASE_FILE_UTIL_PROXY_H_