ServiceWorkerVersion: remove unused parameter in DispatchInstallEvent

ServiceWorkerVersion: remove unused parameter in DispatchInstallEvent

I believe the param (active_version_id) was a remnant of the ancient spec/impl.

BUG=n/a

Committed: https://crrev.com/29be3dc620d0a0eab956a596254baa1a5dc657fd
Cr-Commit-Position: refs/heads/master@{#319031}

[kinuko, 2015-03-02 08:46:56]

kinuko@chromium.org changed reviewers:
+ falken@chromium.org

[kinuko, 2015-03-02 08:47:43]

One more mechanical cleanup. PTL

[falken, 2015-03-03 01:44:34]

nice lgtm

[kinuko, 2015-03-03 03:43:43]

kinuko@chromium.org changed reviewers:
+ tsepez@chromium.org

[kinuko, 2015-03-03 03:44:30]

tsepez@: could you review service_worker_messages.h changes?

Thanks!

[Tom Sepez, 2015-03-03 17:34:36]

RS LGTM on deleting parameter.

[kinuko, 2015-03-04 07:16:02]

The CQ bit was checked by kinuko@chromium.org

[kinuko, 2015-03-04 07:16:02]

The patchset sent to the CQ was uploaded after l-g-t-m from falken@chromium.org
Link to the patchset: https://codereview.chromium.org/966393002/#ps80001 (title:
"build fix")

[commit-bot: I haz the power, 2015-03-04 07:16:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/966393002/80001

[commit-bot: I haz the power, 2015-03-04 08:29:57]

Committed patchset #5 (id:80001)

[commit-bot: I haz the power, 2015-03-04 08:30:42]

Patchset 5 (id:??) landed as
https://crrev.com/29be3dc620d0a0eab956a596254baa1a5dc657fd
Cr-Commit-Position: refs/heads/master@{#319031}