Make our codebase less entertaining.

No intended behavior change.

BUG=none
TBR=owners
NOTRY=true

Review URL: https://codereview.chromium.org/56043002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232663 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232663