Revert of https://chromiumcodereview.appspot.com/116433004/
Reason for revert: As agreed let's not change CSS domain in protocol if we can avoid this.

TBR=pfeldman@chromium.org,apavlov@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/109153005

git-svn-id: svn://svn.chromium.org/blink/trunk@164086 bbb929c8-8fbe-4397-9dbb-9b2b20218538