Add WebSecurityOrigin::CanAccessFeatureRequiringSecureOrigin.

Exposes |SecurityOrigin::canAccessFeatureRequiringSecureOrigin| to
embedders such as Chromium.

BUG=362214

Review URL: https://codereview.chromium.org/428643007

git-svn-id: svn://svn.chromium.org/blink/trunk@179341 bbb929c8-8fbe-4397-9dbb-9b2b20218538