Add Dean Jackson to the animation watchlist.

He asked me to add him as he has interest of watching the changes
happening in Blink around animations and transitions.

git-svn-id: svn://svn.chromium.org/blink/trunk@156041 bbb929c8-8fbe-4397-9dbb-9b2b20218538
animation-direction computed value is incorrect when value is "reverse" or "alternate-reverse"

The support of these values was added in http://trac.webkit.org/changeset/107162
(18 months ago) but the computed value support was not added so it was
returning wrong values.

BUG=271573

Review URL: https://chromiumcodereview.appspot.com/22995003

git-svn-id: svn://svn.chromium.org/blink/trunk@156042 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Ensure elementData is valid in classAttributeChanged.

This patch is a merge of http://trac.webkit.org/changeset/153835 by
Rob Buis.

This patch fixes a null pointer crash that was caused by elementData()
not being valid when changing the class attribute. This situation can
occur if no attributes have been processed before classAttributeChanged
is called.

BUG=

Review URL: https://chromiumcodereview.appspot.com/22892003

git-svn-id: svn://svn.chromium.org/blink/trunk@156043 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Make slow-loading-image-in-pattern.html not use an expected result file.

It was using the expected result from a different test in the test itself.
Instead copy an expected result file into the resources directory and use that.

TBR=adamk@chromium.org

Review URL: https://codereview.chromium.org/22962006

git-svn-id: svn://svn.chromium.org/blink/trunk@156044 bbb929c8-8fbe-4397-9dbb-9b2b20218538