Create blobs from Disk Cache entries.

storage/browser/blob/blob_data_builder.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_builder.h"
 
 #include "base/time/time.h"
 #include "storage/browser/blob/shareable_file_reference.h"
 
 namespace storage {
@@ skipping 42 matching lines @@
     uint64_t offset,
     uint64_t length,
     const base::Time& expected_modification_time) {
   DCHECK(length > 0);
   scoped_ptr<DataElement> element(new DataElement());
   element->SetToFileSystemUrlRange(url, offset, length,
                                    expected_modification_time);
   items_.push_back(new BlobDataItem(element.Pass()));
 }
 
+void BlobDataBuilder::AppendDiskCacheEntry(
+    const scoped_refptr<DataHandle>& data_handle,
+    disk_cache::Entry* disk_cache_entry,
+    int disk_cache_stream_index) {
+  scoped_ptr<DataElement> element(new DataElement());
+  element->SetToDiskCacheEntryRange(
+      0U, disk_cache_entry->GetDataSize(disk_cache_stream_index));
+  items_.push_back(
+      new BlobDataItem(element.Pass(), data_handle, disk_cache_entry,
+                       disk_cache_stream_index));
+}
+
 }  // namespace storage