Auto-rebaseline for r178205

http://src.chromium.org/viewvc/blink?view=revision&revision=178205

BUG=173443
TBR=klemen.forstneric@gmail.com

Review URL: https://codereview.chromium.org/396033004

git-svn-id: svn://svn.chromium.org/blink/trunk@178219 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Fix results.ResultsGrid unit test

Polymer initializes the attribute values to the empty string, not
undefined. This may be a change with a new version of Polymer, hence
Eric using this value and having it work.

TBR=ojan@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/398613002

git-svn-id: svn://svn.chromium.org/blink/trunk@178220 bbb929c8-8fbe-4397-9dbb-9b2b20218538