Add Client Attribute to FetchEvent- Chromium Side.

content/common/service_worker/service_worker_client_info.h

 // 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_CLIENT_INFO_H_
 #define CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_CLIENT_INFO_H_
 
+#include "content/common/content_export.h"
 #include "content/public/common/request_context_frame_type.h"
 #include "third_party/WebKit/public/platform/WebPageVisibilityState.h"
 #include "third_party/WebKit/public/platform/WebServiceWorkerClientType.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 Blink's WebServiceWorkerClientInfo.
 // An instance can be created empty or can be filed with the expected
 // properties. Except for the client_uuid, it is preferred to use the
 // constructor to fill the properties.
-struct ServiceWorkerClientInfo {
+struct CONTENT_EXPORT ServiceWorkerClientInfo {
   ServiceWorkerClientInfo();
   ServiceWorkerClientInfo(blink::WebPageVisibilityState page_visibility_state,
                           bool is_focused,
                           const GURL& url,
                           RequestContextFrameType frame_type,
                           blink::WebServiceWorkerClientType client_type);
 
   // Returns whether the instance is empty.
   bool IsEmpty() const;
 
   // Returns whether the instance is valid. A valid instance is not empty and
   // has a valid client_uuid.
   bool IsValid() const;
 
   std::string client_uuid;
   blink::WebPageVisibilityState page_visibility_state;
   bool is_focused;
   GURL url;
   RequestContextFrameType frame_type;
   blink::WebServiceWorkerClientType client_type;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SERVICE_WORKER_SERVICE_WORKER_CLIENT_INFO_H_