Certificate Transparency: Style fixes following review of issue 55953002.

BUG=309578

Review URL: https://codereview.chromium.org/67073004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235836 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235836