GitLab

Addresses various small review comments and other issues:
- Removes the min-height for the main-page startup page list, where it doesn't make sense
- Changed the min-height for other lists to a multiple of the list item heights
- Removes some of the left padding in select elements
- Makes the bottom shadow of subpages slightly lighter
- Makes the close buttons centered vertically
- Changes the input type of the Add Startup Page overlay to prevent over-aggresive validation

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/6359011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72239 0039d316-1c4b-4281-b951-d872f2087c98