IndexedDB: Fixed support for empty blobs.

storage/browser/blob/blob_url_request_job.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 "storage/browser/blob/blob_url_request_job.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 #include <vector>
@@ skipping 316 matching lines @@
     NotifyFailure(net::ERR_FAILED);
     return false;
   }
 
   // Compute the bytes to read for current item.
   int bytes_to_read = ComputeBytesToRead();
 
   // If nothing to read for current item, advance to next item.
   if (bytes_to_read == 0) {
     AdvanceItem();
-    return ReadItem();
+    return true;
   }
 
   // Do the reading.
   const BlobDataItem& item = *items.at(current_item_index_);
   if (item.type() == DataElement::TYPE_BYTES)
     return ReadBytesItem(item, bytes_to_read);
   if (IsFileType(item.type())) {
     return ReadFileItem(GetFileStreamReader(current_item_index_),
                         bytes_to_read);
   }
@@ skipping 253 matching lines @@
                    .release();
       break;
     default:
       NOTREACHED();
   }
   DCHECK(reader);
   index_to_reader_[index] = reader;
 }
 
 }  // namespace storage