Rename webkit_blob::FileReader to FileStreamReader.

webkit/blob/file_stream_reader.h

 // Copyright (c) 2012 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_BLOB_FILE_READER_H_
-#define WEBKIT_BLOB_FILE_READER_H_
+#ifndef WEBKIT_BLOB_FILE_STREAM_READER_H_
+#define WEBKIT_BLOB_FILE_STREAM_READER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "net/base/completion_callback.h"
 #include "webkit/blob/blob_export.h"
 
 namespace net {
-class FileStream;
 class IOBuffer;
 }
 
 namespace webkit_blob {
 
 // A generic interface for reading a file-like object.
-class BLOB_EXPORT FileReader {
+class BLOB_EXPORT FileStreamReader {
  public:
   // It is valid to delete the reader at any time.  If the stream is deleted
   // while it has a pending read, its callback will not be called.
-  virtual ~FileReader() {}
+  virtual ~FileStreamReader() {}
 
   // Reads from the current cursor position asynchronously.
   //
   // Up to buf_len bytes will be copied into buf.  (In other words, partial
   // reads are allowed.)  Returns the number of bytes copied, 0 if at
   // end-of-file, or an error code if the operation could not be performed.
   // If the read could not complete synchronously, then ERR_IO_PENDING is
   // returned, and the callback will be run on the thread where Read()
   // was called, when the read has completed.
   //
   // It is invalid to call Read while there is an in-flight Read operation.
   //
   // If the stream is deleted while it has an in-flight Read operation
   // |callback| will not be called.
   virtual int Read(net::IOBuffer* buf, int buf_len,
                    const net::CompletionCallback& callback) = 0;
 };
 
 }  // namespace webkit_blob
 
-#endif  // WEBKIT_BLOB_FILE_READER_H_
+#endif  // WEBKIT_BLOB_FILE_STREAM_READER_H_