Sync the DataTransfer* interfaces with the spec

The only change to the generated code is due to
DataTransferItemList.length now being unsigned long, but since will not
be observable as DataTransferItemList::length() will not return any
negative values.

BUG=460722

Review URL: https://codereview.chromium.org/1036273002

git-svn-id: svn://svn.chromium.org/blink/trunk@192697 bbb929c8-8fbe-4397-9dbb-9b2b20218538
3 files changed
tree: 0fe4f516b5b3244cda557e2794f7e46a7bd3f0a3
  1. third_party/