Very long comments, like when posting a diff that failed to apply, cause extra
burden on the Commit Queue logs.

TBR=csharp@chromium.org
BUG=


Review URL: https://chromiumcodereview.appspot.com/11929027

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@177713 0039d316-1c4b-4281-b951-d872f2087c98