[OnionSoup] Move service_worker_status_code.{cc,h} into Blink

This CL moves the ServiceWorkerStatusCode enum definition files
service_worker_status_code.{cc,h} from content/common/service_worker/
into Blink public folder. After that the ServiceWorkerStatusCode enum
is still available to be used by both browser and renderer code.

This CL also moves a TypeConverter for ServiceWorkerStatusCode into
Blink.

BUG=789854

Change-Id: Ie8032cb7474c7f90f17e58170a38b97263643fbd
Reviewed-on: https://chromium-review.googlesource.com/1114474
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Han Leon <leon.han@intel.com>
Cr-Commit-Position: refs/heads/master@{#570635}
139 files changed