Use UUID for ServiceWorker Client identifier (2/3, chromium)

content/common/service_worker/service_worker_client_info.cc

 // Copyright 2015 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.
 
 #include "content/common/service_worker/service_worker_client_info.h"
 
 #include "base/logging.h"
 #include "content/common/service_worker/service_worker_types.h"
 
 namespace content {
 
 ServiceWorkerClientInfo::ServiceWorkerClientInfo()
-  : client_id(kInvalidServiceWorkerClientId),
-    page_visibility_state(blink::WebPageVisibilityStateLast),
+  : page_visibility_state(blink::WebPageVisibilityStateLast),
     is_focused(false),
     frame_type(REQUEST_CONTEXT_FRAME_TYPE_LAST),
     client_type(blink::WebServiceWorkerClientTypeLast) {
 }
 
 ServiceWorkerClientInfo::ServiceWorkerClientInfo(
     blink::WebPageVisibilityState page_visibility_state,
     bool is_focused,
     const GURL& url,
     RequestContextFrameType frame_type,
     blink::WebServiceWorkerClientType client_type)
-    : client_id(kInvalidServiceWorkerClientId),
-      page_visibility_state(page_visibility_state),
+    : page_visibility_state(page_visibility_state),
       is_focused(is_focused),
       url(url),
       frame_type(frame_type),
       client_type(client_type) {
 }
 
 bool ServiceWorkerClientInfo::IsEmpty() const {
   return page_visibility_state == blink::WebPageVisibilityStateLast &&
          is_focused == false &&
          url.is_empty() &&
          frame_type == REQUEST_CONTEXT_FRAME_TYPE_LAST &&
          client_type == blink::WebServiceWorkerClientTypeLast;
 }
 
 bool ServiceWorkerClientInfo::IsValid() const {
-  return !IsEmpty() && client_id != kInvalidServiceWorkerClientId;
+  return !IsEmpty() && !client_uuid.empty();
 }
 
 }  // namespace content