Certificate Transparency: Address review comments from issue 67513008
Comment and indentation fixes, no functional changes.

BUG=309578

Review URL: https://codereview.chromium.org/87923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237355 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237355