service worker: Remove service worker from ResourceRequestorInfo.

This was needed for navigation preloads in the non-S13nServiceWorker
path. It's obsolete following the launch of S13nServiceWorker.

TBR=kinuko

Bug: 926114
Change-Id: Ic808c733e4da886566567ce3036de0a65a810b40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1572762
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652454}
9 files changed