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Use TRACE_EVENT_WITH_FLOW for tracing ServiceWorkerContextClient events

This patch makes it easier to track the events dispatched by ServiceWorkerContextClient,
similarly as https://chromium-review.googlesource.com/1156334 .

Events modified in this patch are as follows (in the order of appearance):
* ActivateEvent
* BackgroundFetchAbortEvent
* BackgroundFetchClickEvent
* BackgroundFetchFailEvent
* BackgroundFetchedEvent
* DispatchCookieChangeEvent
* ExtendableMessageEvent
* InstallEvent
* NotificationClickEvent
* NotificationCloseEvent
* PushEvent
* SyncEvent
* AbortPaymentEvent
* CanMakePaymentEvent
* PaymentRequestEvent
* OnNavigationPreload

Bug: 860394
Change-Id: Ief11e8a755256ccba5c066d94f3481bd52ed2bcb
Reviewed-on: https://chromium-review.googlesource.com/1159939Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Commit-Queue: Momoko Hattori <momohatt@google.com>
Cr-Commit-Position: refs/heads/master@{#580135}