GitLab

Ensure that we call DispatcherDelegate::InitializeBindingsSystem for
the bindings system created for worker-thread bindings in order to
allow adding custom bindings.

Bug: 653596
Change-Id: I4e5a71d13d27738098daf281ff49400f533b716d
Reviewed-on: https://chromium-review.googlesource.com/759720
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521108}