[WebView Support Library] Support service worker APIs.

Provide (chromium-side) support for ServiceWorkers in the WebView
Support Library.
We'll add feature flags for the ServiceWorker APIs in a follow-up.

Bug: 819595
Change-Id: Id4c79e3970706633e36b28538c443a00c7e59e03
Reviewed-on: https://chromium-review.googlesource.com/964142
Reviewed-by: Richard Coles <torne@chromium.org>
Reviewed-by: Nate Fischer <ntfschr@chromium.org>
Commit-Queue: Gustav Sennton <gsennton@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#545024}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 824511444f1772442551af893e3e0fdeafed177a
5 files changed
tree: e5b3aae3f110003b36c1b2ffc7f730ee0624ca6b
  1. BUILD.gn
  2. DEPS
  3. proguard.flags
  4. src/