Fix LayoutTest crypto/jwk-import-use-values.html

The test was broken by a Chromium-side change which disallowed duplicate key_ops in JWK keys (intentional).

Re-baselined the test given the updated policy.

TBR=rsleevi@chromium.org
BUG=427832,378074

Review URL: https://codereview.chromium.org/687753002

git-svn-id: svn://svn.chromium.org/blink/trunk@184550 bbb929c8-8fbe-4397-9dbb-9b2b20218538