Sync the File API interfaces with the spec

Source/core/fileapi/BlobPropertyBag.idl

Index: Source/core/fileapi/BlobPropertyBag.idl
diff --git a/Source/core/fileapi/BlobPropertyBag.idl b/Source/core/fileapi/BlobPropertyBag.idl
index 8c1f2956a7ffb8d8a86e4b28764c8329f758ced2..3c76693370f1468e3b71fc4e7c2f864ca603f110 100644
--- a/Source/core/fileapi/BlobPropertyBag.idl
+++ b/Source/core/fileapi/BlobPropertyBag.idl
@@ -2,11 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// https://w3c.github.io/FileAPI/#blob
+
 // TODO(jsbell): This enum is non-standard.
 // https://developer.mozilla.org/en-US/docs/Web/API/Blob/Blob
 enum NormalizeLineEndings { "transparent", "native" };
 
-// http://dev.w3.org/2006/webapi/FileAPI/#dfn-Blob
 dictionary BlobPropertyBag {
     DOMString type = "";