Fix proportional image view for Views.

Vertically-oriented images are rendered as 240px tall with a 10px border
on top and bottom, instead of 220px tall with a 10px border on top and
bottom.

BUG=329635

Review URL: https://codereview.chromium.org/107663013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242556 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242556