Use the request URL as the URL of the resources which are fetched ServiceWorker ...

Use the request URL as the URL of the resources which are fetched ServiceWorker [2/3 chromium]

blink: https://codereview.chromium.org/732963003
 - Intorduce originalURLViaServiceWorker in ResourceResponse and WebURLResponse
 - Change CSP check to use originalURLViaServiceWorker if exists in ResourceFetcher::didReceiveResponse().
2/3 chromium: https://codereview.chromium.org/731983003 [THIS PATCH]
 - Stop updating the request's URL in ResourceDispatcher::OnReceivedResponse() and WebURLLoaderImpl::Context::OnReceivedResponse().
 - Set WebURLResponse's originalURLViaServiceWorker in WebURLLoaderImpl::PopulateURLResponse().
blink: https://codereview.chromium.org/732003002
 - Change CSP check to use originalURLViaServiceWorker.
 - Add LayoutTest for this bug.

BUG=433743

Review URL: https://codereview.chromium.org/731983003

Cr-Commit-Position: refs/heads/master@{#305075}