Gather the ServiceWorker client information in the browser process.

content/common/service_worker/service_worker_client_info.h

Index: content/common/service_worker/service_worker_client_info.h
diff --git a/content/common/service_worker/service_worker_client_info.h b/content/common/service_worker/service_worker_client_info.h
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+// 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.
+
+#ifndef CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_INFO_CLIENT_H_
+#define CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_INFO_CLIENT_H_
+
+#include "base/macros.h"
+#include "content/public/common/request_context_frame_type.h"
+#include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
+#include "third_party/WebKit/public/platform/WebServiceWorkerClientsInfo.h"
+#include "url/gurl.h"
+
+namespace content {
+
+// This class holds the information related to a service worker window client.
+// It is the content/ equivalent of WebServiceWorkerClientInfo.
+// An instance can be created empty or can be filed with the expected
+// properties. After its creation, it is not possible to change the properties
+// of the object, except set the client id once.
+class ServiceWorkerClientInfo {
+ public:
+  ServiceWorkerClientInfo();
+  ServiceWorkerClientInfo(blink::WebPageVisibilityState page_visibility_state,
+                          bool is_focused,
+                          const GURL& url,
+                          RequestContextFrameType frame_type);
+
+  int client_id() const;
+  blink::WebPageVisibilityState page_visibility_state() const;
+  bool is_focused() const;
+  const GURL& url() const;
+  RequestContextFrameType frame_type() const;
+
+  // Set the client id and finishes the initialization of the object.
+  void SetClientID(int client_id);
+
+  // Returns whether the instance was created empty. An empty instance can't
+  // have properties set to it later.
+  bool IsEmpty() const;
+
+  // Returns whether the instance is valid. A valid instance is not empty and
+  // has a client id.
+  bool IsValid() const;
+
+  operator blink::WebServiceWorkerClientInfo() const;
+
+ private:
+  bool empty_;
+  bool has_client_id_;
+
+  int client_id_;
+  blink::WebPageVisibilityState page_visibility_state_;
+  bool is_focused_;
+  GURL url_;
+  RequestContextFrameType frame_type_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_INFO_CLIENT_H_