Remove the needsSiteSpecificQuirks setting

It does nothing as of Blink r178756:
https://codereview.chromium.org/414443006

It's never set as of Chromium r289294:
https://codereview.chromium.org/449393002

BUG=401887

Review URL: https://codereview.chromium.org/453813003

git-svn-id: svn://svn.chromium.org/blink/trunk@180193 bbb929c8-8fbe-4397-9dbb-9b2b20218538
4 files changed