Support FileSystem URL in File object

webkit/blob/blob_data.h

Index: webkit/blob/blob_data.h
diff --git a/webkit/blob/blob_data.h b/webkit/blob/blob_data.h
index 63947f4daf2ffd5cae7e3ef58ef286557f220080..1afab560036beba9308f41696b3dcbb42b62e1bd 100644
--- a/webkit/blob/blob_data.h
+++ b/webkit/blob/blob_data.h
@@ -35,6 +35,9 @@ class BLOB_EXPORT BlobData : public base::RefCounted<BlobData> {
 
   void AppendBlob(const GURL& blob_url, uint64 offset, uint64 length);
 
+  void AppendFileSystemFile(const GURL& url, uint64 offset, uint64 length,
+                            const base::Time& expected_modification_time);
+
   void AttachShareableFileReference(ShareableFileReference* reference) {
     shareable_files_.push_back(reference);
   }