Upstream service wrkr "window client" test to WPT
Re-locate test files to Web Platform Test directory for eventual
automated upstreaming.
The original version of this test registered a handler for the service
worker's "install" event after initial evaluation. Because this practice
is discouraged by the specification, it should be avoided. Re-factor the
test to immediately register the event handler and to preserve the
necessary behavior through an explicit message channel with the client.
Add a "use strict" directive to script bodies. Introduce a variable
declaration for a previously-undeclared binding. Correct a typo in an
error message. Ensure that each sub-test's asynchronous "cleanup" logic
is complete prior to advancing to the next sub-test.
BUG=688116
R=falken@chromium.org
Review-Url: https://codereview.chromium.org/2906963002
Cr-Commit-Position: refs/heads/master@{#475409}
4 files changed
