Add CreateFileSystemOperation() method to FileSystemContext

content/browser/file_system/file_system_dispatcher_host.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_HOST_H_
 
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/id_map.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "webkit/fileapi/file_system_types.h"
 
 class FilePath;
 class GURL;
 
 namespace base {
 class Time;
 }
 
 namespace fileapi {
 class FileSystemContext;
-class FileSystemOperation;
+class FileSystemOperationInterface;
 }
 
 namespace net {
 class URLRequestContext;
 class URLRequestContextGetter;
 }  // namespace net
 
 class FileSystemDispatcherHost : public content::BrowserMessageFilter {
  public:
   // Used by the renderer process host on the UI thread.
@@ skipping 46 matching lines @@
                    const GURL& path,
                    const base::Time& last_access_time,
                    const base::Time& last_modified_time);
   void OnCancel(int request_id, int request_to_cancel);
   void OnOpenFile(int request_id, const GURL& path, int file_flags);
   void OnWillUpdate(const GURL& path);
   void OnDidUpdate(const GURL& path, int64 delta);
   void OnSyncGetPlatformPath(const GURL& path,
                              FilePath* platform_path);
 
-  // Creates a new FileSystemOperation.
-  fileapi::FileSystemOperation* GetNewOperation(int request_id);
+  // Creates a new FileSystemOperationInterface based on |target_path|.
+  fileapi::FileSystemOperationInterface* GetNewOperation(
+      const GURL& target_path,
+      int request_id);
 
   fileapi::FileSystemContext* context_;
 
   // Keeps ongoing file system operations.
-  typedef IDMap<fileapi::FileSystemOperation> OperationsMap;
+  typedef IDMap<fileapi::FileSystemOperationInterface> OperationsMap;
   OperationsMap operations_;
 
   // The getter holds the context until Init() can be called from the
   // IO thread, which will extract the net::URLRequestContext from it.
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
   net::URLRequestContext* request_context_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemDispatcherHost);
 };
 
 #endif  // CONTENT_BROWSER_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_HOST_H_