Revert "Fix": trailing whitespace fix, lacked docs

This reverts commit 9e8ce333fcaad4fd24dd1684f2732bbd0f6037f7.

TBR=ojan, tkent, haraken

git-svn-id: svn://svn.chromium.org/blink/trunk@154960 bbb929c8-8fbe-4397-9dbb-9b2b20218538