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This patch emits ExtraInfo events for service worker main and
subresource requests by setting the render_frame_id of all
network::ResourceRequests made by service workers from -2 to a routing
id for DevTools which is already sent from the browser process to the
renderer process when creating a service worker. Setting the
render_frame_id allows us to identify which service worker a request
came from in the browser process through NetworkServiceClient.

Bug: 991471
Change-Id: I8031644c10cba177917e5b6bc25e4ada088d95cb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1746204
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#700871}