Test that non-ASCII URIs work correctly in cache manifests.

Should be a series of PASS messages, followed with DONE.

PASS: resources/intercept/cached-Проверка
PASS: resources/intercept/cached-%D0%9F%D1%80%D0%BE%D0%B2%D0%B5%D1%80%D0%BA%D0%B0
PASS: resources/intercept/cached2-Проверка
PASS: resources/intercept/cached2-%D0%9F%D1%80%D0%BE%D0%B2%D0%B5%D1%80%D0%BA%D0%B0
PASS: resources/intercept/network-Проверка-PASS
PASS: resources/intercept/network-%D0%9F%D1%80%D0%BE%D0%B2%D0%B5%D1%80%D0%BA%D0%B0-PASS
PASS: resources/does-not-exist-Проверка
DONE