Reland 132134 with memory fix - Use LocalFileReader in FileSystemURLRequestJob

webkit/blob/local_file_reader.cc

 // 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.
 
 #include "webkit/blob/local_file_reader.h"
 
 #include "base/file_util.h"
 #include "base/file_util_proxy.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
@@ skipping 52 matching lines @@
 }
 
 void DidSeekFile(const LocalFileReader::OpenFileStreamCallback& callback,
                  scoped_ptr<net::FileStream> stream_impl,
                  int64 initial_offset,
                  int64 new_offset) {
   int result = net::OK;
   if (new_offset < 0)
     result = static_cast<int>(new_offset);
   else if (new_offset != initial_offset)
-    result = net::ERR_FAILED;
+    result = net::ERR_REQUEST_RANGE_NOT_SATISFIABLE;
   callback.Run(result, stream_impl.Pass());
 }
 
 void EmptyCompletionCallback(int) {}
 
 }  // namespace
 
 // A helper class to open, verify and seek a file stream for a given path.
 class LocalFileReader::OpenFileStreamHelper {
  public:
@@ skipping 123 matching lines @@
     return;
   }
   DCHECK(stream_impl.get());
   stream_impl_ = stream_impl.Pass();
   const int read_error = stream_impl_->Read(buf, buf_len, callback);
   if (read_error != net::ERR_IO_PENDING)
     callback.Run(read_error);
 }
 
 }  // namespace webkit_blob