Add Client Attribute to FetchEvent- Chromium Side.

content/renderer/service_worker/service_worker_script_context.cc

Index: content/renderer/service_worker/service_worker_script_context.cc
diff --git a/content/renderer/service_worker/service_worker_script_context.cc b/content/renderer/service_worker/service_worker_script_context.cc
index de32db8ddc38c986363fbf03a1d28e4c4e16b48f..3db66d5eaa1d1ba3ed63fec39d7f8a9d3276caba 100644
--- a/content/renderer/service_worker/service_worker_script_context.cc
+++ b/content/renderer/service_worker/service_worker_script_context.cc
@@ -353,6 +353,7 @@ void ServiceWorkerScriptContext::OnFetchEvent(
       GetBlinkRequestContext(request.request_context_type));
   webRequest.setFrameType(GetBlinkFrameType(request.frame_type));
   webRequest.setIsReload(request.is_reload);
+  webRequest.setClient(ToWebServiceWorkerClientInfo(request.client));
   fetch_start_timings_[request_id] = base::TimeTicks::Now();
   proxy_->dispatchFetchEvent(request_id, webRequest);
 }