commit 60855ad5ed67add982bf86c34cb14b44e7b85b75
author schenney <schenney@chromium.org> Thu Jul 07 14:09:48 2016
committer Commit bot <commit-bot@chromium.org> Thu Jul 07 14:11:33 2016
tree 45bc0f6dd5f04a9b3f1b17c93e364f4cad7ac474
parent a825f90e8fdbd9e41bd2dcafffa88662fb50878f

Fix aspect ratio for rounded background image size

The previous calculation to maintain aspect size when one
background image dimension is round and the other is auto
was using the new tile size for the rounded dimension for the
aspect ratio calculation, which is wrong. This change switches
to using the original aspect ratio.

New tests for both horizontal and vertical cases.

R=fmalita@chromium.org
BUG=612278

Review-Url: https://codereview.chromium.org/2130523002
Cr-Commit-Position: refs/heads/master@{#404154}