Remove InterfaceRegistry/Provider from service workers

content/common/service_worker/service_worker_event_dispatcher.mojom

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 module content.mojom;
 
 import "content/common/url_loader.mojom";
 import "mojo/common/common_custom_types.mojom";
+import "third_party/WebKit/public/platform/modules/background_sync/background_sync.mojom";
 import "third_party/WebKit/public/platform/modules/serviceworker/service_worker_event_status.mojom";
 
 [Native]
 struct ServiceWorkerFetchRequest;
 
 struct FetchEventPreloadHandle {
   URLLoader url_loader;
   URLLoaderClient& url_loader_client_request;
 };
 
-interface FetchEventDispatcher {
+interface ServiceWorkerEventDispatcher {
   DispatchFetchEvent(int32 fetch_event_id, ServiceWorkerFetchRequest request,
                      FetchEventPreloadHandle? preload_handle)
       => (blink.mojom.ServiceWorkerEventStatus status,
           mojo.common.mojom.Time dispatch_event_time);
+  DispatchSyncEvent(string tag, blink.mojom.BackgroundSyncEventLastChance last_chance)

[dcheng, 2016/11/22 07:59:04]

In a followup, can we add some comments about the different interfaces (where
they live, what they do) and the interface methods (what are the arguments,
return values, what do they do)? For example, I'm not really sure what |tag| is
here.

Nit: also 80 chars

[shimazu, 2016/11/24 06:47:32]

Done.

+      => (blink.mojom.ServiceWorkerEventStatus status,
+          mojo.common.mojom.Time dispatch_event_time);
 };