Create blobs from Disk Cache entries.

storage/browser/blob/blob_data_item.cc

 // Copyright (c) 2015 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_data_item.h"
 
 namespace storage {
 
-BlobDataItem::BlobDataItem(scoped_ptr<DataElement> item,
-                           scoped_refptr<ShareableFileReference> file_handle)
-    : item_(item.Pass()), file_handle_(file_handle) {
+disk_cache::Entry* BlobDataItem::DataHandle::disk_cache_entry() const {
+  return nullptr;
 }
+
+BlobDataItem::DataHandle::~DataHandle() {
+}
+
 BlobDataItem::BlobDataItem(scoped_ptr<DataElement> item) : item_(item.Pass()) {
 }
+
+BlobDataItem::BlobDataItem(scoped_ptr<DataElement> item,
+                           const scoped_refptr<DataHandle>& data_handle)
+    : item_(item.Pass()),
+      data_handle_(data_handle) {
+}
+
+BlobDataItem::BlobDataItem(scoped_ptr<DataElement> item,
+                           const scoped_refptr<DataHandle>& data_handle,
+                           int disk_cache_stream_index)
+    : item_(item.Pass()),
+      data_handle_(data_handle),
+      disk_cache_stream_index_(disk_cache_stream_index) {
+}
+
 BlobDataItem::~BlobDataItem() {
 }
 
 }  // namespace storage