Fix img misalign in new wallpaper picker ui

BUG=148424, 148751

Review URL: https://chromiumcodereview.appspot.com/10919253

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@156633 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed