Support removeRecursively and new copy/move behaviors for FileSystem API

chrome/common/file_system/webfilesystem_impl.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 CHROME_COMMON_FILE_SYSTEM_WEBFILESYSTEM_IMPL_H_
 #define CHROME_COMMON_FILE_SYSTEM_WEBFILESYSTEM_IMPL_H_
 
 #include "base/basictypes.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebFileSystem.h"
 
@@ skipping 14 matching lines @@
 
   virtual void copy(
       const WebKit::WebString& src_path,
       const WebKit::WebString& dest_path,
       WebKit::WebFileSystemCallbacks*);
 
   virtual void remove(
       const WebKit::WebString& path,
       WebKit::WebFileSystemCallbacks*);
 
+  virtual void removeRecursively(
+      const WebKit::WebString& path,
+      WebKit::WebFileSystemCallbacks*);
+
   virtual void readMetadata(
       const WebKit::WebString& path,
       WebKit::WebFileSystemCallbacks*);
 
   virtual void createFile(
       const WebKit::WebString& path,
       bool exclusive,
       WebKit::WebFileSystemCallbacks*);
 
   virtual void createDirectory(
@@ skipping 11 matching lines @@
 
   virtual void readDirectory(
       const WebKit::WebString& path,
       WebKit::WebFileSystemCallbacks*);
 
   virtual WebKit::WebFileWriter* createFileWriter(
       const WebKit::WebString& path, WebKit::WebFileWriterClient*);
 };
 
 #endif  // CHROME_COMMON_FILE_SYSTEM_WEBFILESYSTEM_IMPL_H_