Move service_worker from content/child to content/renderer.

BUG=777007
TBR=haraken@chromium.org

Change-Id: I9c32a7e136a957555eb4a0db3d483b1ab0e95945
Reviewed-on: https://chromium-review.googlesource.com/732156
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510686}
39 files changed