[ServiceWorker] Add support of FetchEvent's request.body.

[ServiceWorker] Add support of FetchEvent's request.body.

This CL introduces Request.body, but it is only supported in FetchEvent.

The followings are not supported yet.
 - Creating a new Request object with body in JavaScript.
 - Sending body with fetch API.

This cl depends on https://codereview.chromium.org/475333002/.

BUG=402387
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180641

[horo, 2014-08-18 12:04:12]

falken@
Could you please review?

[falken, 2014-08-19 04:08:25]

lgtm.

we haven't been disciplined about it, but we should clean up the junk added to
the document when each test is done.

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
File LayoutTests/http/tests/serviceworker/fetch-event.html (right):

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
LayoutTests/http/tests/serviceworker/fetch-event.html:184: resolve(frame);
can you remove the form here? (or maybe it can be done after the submit?)

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
LayoutTests/http/tests/serviceworker/fetch-event.html:189:
.then(t.step_func(function(frame) {
can you remove the frame here

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
File LayoutTests/http/tests/serviceworker/resources/fetch-event-test-worker.js
(right):

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
LayoutTests/http/tests/serviceworker/resources/fetch-event-test-worker.js:59:
handler.fn(event);
style nit: since the else has braces, this if must also

[horo, 2014-08-19 04:46:14]

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
File LayoutTests/http/tests/serviceworker/fetch-event.html (right):

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
LayoutTests/http/tests/serviceworker/fetch-event.html:184: resolve(frame);
On 2014/08/19 04:08:25, falken wrote:
> can you remove the form here? (or maybe it can be done after the submit?)

Done.

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
LayoutTests/http/tests/serviceworker/fetch-event.html:189:
.then(t.step_func(function(frame) {
On 2014/08/19 04:08:25, falken wrote:
> can you remove the frame here

Done.

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
File LayoutTests/http/tests/serviceworker/resources/fetch-event-test-worker.js
(right):

https://codereview.chromium.org/475533005/diff/140001/LayoutTests/http/tests/...
LayoutTests/http/tests/serviceworker/resources/fetch-event-test-worker.js:59:
handler.fn(event);
On 2014/08/19 04:08:25, falken wrote:
> style nit: since the else has braces, this if must also

Done.

[horo, 2014-08-20 09:41:36]

The CQ bit was checked by horo@chromium.org

[commit-bot: I haz the power, 2014-08-20 09:42:41]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/horo@chromium.org/475533005/200001

[commit-bot: I haz the power, 2014-08-20 10:42:58]

Committed patchset #3 (200001) as 180641