ServiceWorker: Implement ServiceWorkerRegistration [2/3]

ServiceWorker: Implement ServiceWorkerRegistration [2/3]

This implements WebServiceWorkerRegistration based on the latest spec
and resolves a register promise with it instead of a ServiceWorker object.

Spec: https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#service-worker-registration-obj 

[1] Blink: https://codereview.chromium.org/413123002/
[2] Chromium: This patch.
[3] Blink: Remove the macro and fix a bunch of layout tests.


BUG=396400
TEST=compile (tests will be added by subsequent patches)

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=285599

[nhiroki, 2014-07-24 07:34:14]

Ptal.

[michaeln, 2014-07-25 00:47:29]

i wonder if we should do the refactoring described in crbug/384119 in support of
this round of api changes?

[falken, 2014-07-25 06:19:21]

this change lgtm

The IPC refactoring is desirable but I'm not sure the extent to which it helps
implement this new API. nhiroki can probably decide as he continues.

[nhiroki, 2014-07-25 07:20:07]

On 2014/07/25 00:47:29, michaeln wrote:
> i wonder if we should do the refactoring described in crbug/384119 in support
of
> this round of api changes?

I think such a refactoring really helps to implement installing/waiting/active
attributes, but those are out-of-scope for this milestone. Let me revisit it
when start to implement them.

[nhiroki, 2014-07-25 14:33:53]

The CQ bit was checked by nhiroki@chromium.org

[commit-bot: I haz the power, 2014-07-25 14:34:40]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/nhiroki@chromium.org/415963002/40001

[commit-bot: I haz the power, 2014-07-25 16:48:30]

Change committed as 285599