Relevant changes:
- New allowSingleLineStatement property for NeedBraces check to allow
  one-line statements.
- New option to Indentation to avoid C style.

See full release notes here:
http://checkstyle.sourceforge.net/releasenotes.html

BUG=None
R=newt@chromium.org

Review URL: https://codereview.chromium.org/1055973002

Cr-Commit-Position: refs/heads/master@{#323564}