Create blobs from Disk Cache entries.

storage/browser/blob/blob_data_builder.cc

Index: storage/browser/blob/blob_data_builder.cc
diff --git a/storage/browser/blob/blob_data_builder.cc b/storage/browser/blob/blob_data_builder.cc
index 7c305a2f37719f258f6d1e7099e19a28ea0d9951..b427e143d5a582b90e6242396b557094a7960da3 100644
--- a/storage/browser/blob/blob_data_builder.cc
+++ b/storage/browser/blob/blob_data_builder.cc
@@ -60,4 +60,13 @@ void BlobDataBuilder::AppendFileSystemFile(
   items_.push_back(new BlobDataItem(element.Pass()));
 }
 
+void BlobDataBuilder::AppendDiskCacheEntry(disk_cache::ScopedEntryPtr entry,
+                                           int index,
+                                           scoped_ptr<ExtraData> extra_data) {
+  scoped_ptr<DataElement> element(new DataElement());
+  element->SetToDiskCacheEntry();
+  items_.push_back(new BlobDataItem(element.Pass(), extra_data.Pass(),
+                                    entry.Pass(), index));
+}
+
 }  // namespace storage