Save cookies.

Create an instance of the default sqlite cookie store and set it on
the URLRequestContextStorage.

Change-Id: I657ed947962bbfaa7369db0b4ce5cad22ee7de7f
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>
Use functors instead of lambda expressions when creating a context menu.

Change-Id: I09cea3230da7d0b7a218108668bd562f2cb57384
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>