Plumb a content settings client for nested workers.

Bug: 829119
Change-Id: I6b85f4776e54fdc3f5cc036cfe46b6ef53e250b1
Reviewed-on: https://chromium-review.googlesource.com/1000518
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Nate Chapin <japhet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549655}
5 files changed