Fix synchronous xml requests with ssl errors.

Use the in-memory ssl preference table before posting a message to the WebCore
thread. Since the WebCore thread is blocked waiting for the ssl resource, we
cannot query the user for their preference. If the table does not contain the
user's decision, bail on the request to avoid a deadlock.

Also mark a few of the ssl handler's method's as synchronized. This was reported
by findbugs.
3 files changed