chrome://inspect Polish action links styles

TBR=pfeldman
BUG=309977

Review URL: https://codereview.chromium.org/39993004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230703 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230703