Add Worker support for FileSystem API.

webkit/fileapi/file_system_callback_dispatcher.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 WEBKIT_FILEAPI_FILE_SYSTEM_CALLBACK_DISPATCHER_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_CALLBACK_DISPATCHER_H_
 
 #include <vector>
 
 #include "base/file_util_proxy.h"
-#include "base/string16.h"
 
 namespace fileapi {
 
 // This class mirrors the callbacks in
 // third_party/WebKit/WebKit/chromium/public/WebFileSystemCallbacks.h,
 // but uses chromium types.
 class FileSystemCallbackDispatcher {
  public:
   // Callback for various operations that don't require return values.
   virtual void DidSucceed() = 0;
 
   // Callback to report information for a file.
   virtual void DidReadMetadata(const base::PlatformFileInfo& file_info) = 0;
 
   // Callback to report the contents of a directory. If the contents of
   // the given directory are reported in one batch, then |entries| will have
   // the list of all files/directories in the given directory, |has_more| will
   // be false, and this callback will be called only once. If the contents of
   // the given directory are reported in multiple chunks, then this callback
   // will be called multiple times, |entries| will have only a subset of
   // all contents (the subsets reported in any two calls are disjoint), and
   // |has_more| will be true, except for the last chunk.
   virtual void DidReadDirectory(
       const std::vector<base::file_util_proxy::Entry>& entries,
       bool has_more) = 0;
 
   // Callback for opening a file system. Called with a name and root path for
   // the FileSystem when the request is accepted. Used by WebFileSystem API.
-  virtual void DidOpenFileSystem(const string16& name,
+  virtual void DidOpenFileSystem(const std::string& name,
                                  const FilePath& root_path) = 0;
 
   // Called with an error code when a requested operation has failed.
   virtual void DidFail(base::PlatformFileError error_code) = 0;
 };
 
 } // namespace fileapi
 
 #endif  //  WEBKIT_FILEAPI_FILE_SYSTEM_CALLBACK_DISPATCHER_H_