tree d9d017687352ab0e2ea605695b0c9dfffbb03f7b
parent ca5e100fe09749a3c43187c3545918f9d2f80f8c
author sigbjornf@opera.com <sigbjornf@opera.com> 1428620930 +0000
committer sigbjornf@opera.com <sigbjornf@opera.com> 1428620930 +0000

Correctly handle updates over attached Attrs involving null values.

Element attributes having a null value are not stored by the ElementData's
attribute collection. When updating an Element-attached Attr with
a new value, which previously was null, correctly handle updates over
null values (before and after.)

R=
BUG=472840

Review URL: https://codereview.chromium.org/1073823002

git-svn-id: svn://svn.chromium.org/blink/trunk@193484 bbb929c8-8fbe-4397-9dbb-9b2b20218538