Rename content/{common,browser}/file_system to fileapi and move blob stuff into it.

content/common/file_system/webfilewriter_impl.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_COMMON_FILE_SYSTEM_WEBFILEWRITER_IMPL_H_
-#define CONTENT_COMMON_FILE_SYSTEM_WEBFILEWRITER_IMPL_H_
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "webkit/fileapi/webfilewriter_base.h"
-
-// An implementation of WebFileWriter for use in chrome renderers and workers.
-class WebFileWriterImpl : public fileapi::WebFileWriterBase,
-                          public base::SupportsWeakPtr<WebFileWriterImpl> {
- public:
-  WebFileWriterImpl(const GURL& path, WebKit::WebFileWriterClient* client);
-  virtual ~WebFileWriterImpl();
-
- protected:
-  // WebFileWriterBase overrides
-  virtual void DoTruncate(const GURL& path, int64 offset) OVERRIDE;
-  virtual void DoWrite(const GURL& path, const GURL& blob_url,
-                       int64 offset) OVERRIDE;
-  virtual void DoCancel() OVERRIDE;
-
- private:
-  class CallbackDispatcher;
-  int request_id_;
-};
-
-#endif  // CONTENT_COMMON_FILE_SYSTEM_WEBFILEWRITER_IMPL_H_