Bubble CSS: Replace relative positioning trickery with a margin

The bubble contents is supposed to be inset 1px from the bubble border.
This can be achieved by setting a 1px margin on the content. No need for
any relative positioning trickery.

BUG=134849
TEST=Manual


Review URL: https://chromiumcodereview.appspot.com/11857022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176973 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed